|
pcv breather smoking
when my car is running, usually after it gets hot, the pcv breather
starts blowing white smoke. what is causing this? internet tells me the piston rings are bad and combustion is occuring where it should not. are there any other possibilities? (preferably with an easier fix). can it cause further damage to the engine by running it as this is happening? should i unplug it? is it bad for this smoke to get back to the air filter and down the carb? any help is appreciated. thanks |
Re: pcv breather smoking
88yj wrote:
> when my car is running, usually after it gets hot, the pcv breather > starts blowing white smoke. what is causing this? > internet tells me the piston rings are bad and combustion is occuring > where it should not. are there any other possibilities? (preferably > with an easier fix). can it cause further damage to the engine by > running it as this is happening? should i unplug it? is it bad for > this smoke to get back to the air filter and down the carb? > > any help is appreciated. thanks > You are still implying to me that the plumbing to the gas tank is messed up..... Did you figure out 'why' you keep running out of gas? Could the lines running back there have gotten mixed up? One reason I ask this is because one (well two that go into one) of the lines leading to the gas tank is it's air vent, or charcoal canister. If this is not working or plumbed correctly, you will get 'blowby' or smoke and oil spitting back into the air filter. If you are getting oil into the air filter as well as smoke, please confirm this and I will walk you through one set of tests. First off you need to pull out the front PCV valve and confirm it rattles freely. If not, replace it, it is the likely cause if bad. If just smoke, then maybe it is time to change the air filter on the gas tank vent. When this $2.00 filter blocks up from mud or dust, it puts a vacuum on the gas tank which 'will' act like the engine runs out of gas. You can be driving along and then it starves for gas and bogs, then it stalls and acts like there is no gas. A quick test for a blocked filter is to open the gas cap when it 'runs out of gas'. If you get a hiss and it runs again, the filter is more than dirty, it is blocked. I have had to come home from the mud pits with the gas cap open several times. The filter, sometimes called an evaporation system or emissions filter, is on the bottom of the charcoal canister and is a 'real' pain in the butt to change the first time. I needed a hammer and chisel to get my filter out of the canister and many squirts of penetrating oil on the clamp. Actually I think I gave up on the clamp and just unbolted it from the firewall. Once out, the new one just tucks in. This filter is supposed to be changed the same time as the spark plugs. Mike 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's - Gone to the rust pile... Canadian Off Road Trips Photos: Non members can still view! Jan/06 http://www.imagestation.com/album/pi...?id=2115147590 (More Off Road album links at bottom of the view page) |
Re: pcv breather smoking
88yj wrote:
> when my car is running, usually after it gets hot, the pcv breather > starts blowing white smoke. what is causing this? > internet tells me the piston rings are bad and combustion is occuring > where it should not. are there any other possibilities? (preferably > with an easier fix). can it cause further damage to the engine by > running it as this is happening? should i unplug it? is it bad for > this smoke to get back to the air filter and down the carb? > > any help is appreciated. thanks > You are still implying to me that the plumbing to the gas tank is messed up..... Did you figure out 'why' you keep running out of gas? Could the lines running back there have gotten mixed up? One reason I ask this is because one (well two that go into one) of the lines leading to the gas tank is it's air vent, or charcoal canister. If this is not working or plumbed correctly, you will get 'blowby' or smoke and oil spitting back into the air filter. If you are getting oil into the air filter as well as smoke, please confirm this and I will walk you through one set of tests. First off you need to pull out the front PCV valve and confirm it rattles freely. If not, replace it, it is the likely cause if bad. If just smoke, then maybe it is time to change the air filter on the gas tank vent. When this $2.00 filter blocks up from mud or dust, it puts a vacuum on the gas tank which 'will' act like the engine runs out of gas. You can be driving along and then it starves for gas and bogs, then it stalls and acts like there is no gas. A quick test for a blocked filter is to open the gas cap when it 'runs out of gas'. If you get a hiss and it runs again, the filter is more than dirty, it is blocked. I have had to come home from the mud pits with the gas cap open several times. The filter, sometimes called an evaporation system or emissions filter, is on the bottom of the charcoal canister and is a 'real' pain in the butt to change the first time. I needed a hammer and chisel to get my filter out of the canister and many squirts of penetrating oil on the clamp. Actually I think I gave up on the clamp and just unbolted it from the firewall. Once out, the new one just tucks in. This filter is supposed to be changed the same time as the spark plugs. Mike 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's - Gone to the rust pile... Canadian Off Road Trips Photos: Non members can still view! Jan/06 http://www.imagestation.com/album/pi...?id=2115147590 (More Off Road album links at bottom of the view page) |
Re: pcv breather smoking
88yj wrote:
> when my car is running, usually after it gets hot, the pcv breather > starts blowing white smoke. what is causing this? > internet tells me the piston rings are bad and combustion is occuring > where it should not. are there any other possibilities? (preferably > with an easier fix). can it cause further damage to the engine by > running it as this is happening? should i unplug it? is it bad for > this smoke to get back to the air filter and down the carb? > > any help is appreciated. thanks > You are still implying to me that the plumbing to the gas tank is messed up..... Did you figure out 'why' you keep running out of gas? Could the lines running back there have gotten mixed up? One reason I ask this is because one (well two that go into one) of the lines leading to the gas tank is it's air vent, or charcoal canister. If this is not working or plumbed correctly, you will get 'blowby' or smoke and oil spitting back into the air filter. If you are getting oil into the air filter as well as smoke, please confirm this and I will walk you through one set of tests. First off you need to pull out the front PCV valve and confirm it rattles freely. If not, replace it, it is the likely cause if bad. If just smoke, then maybe it is time to change the air filter on the gas tank vent. When this $2.00 filter blocks up from mud or dust, it puts a vacuum on the gas tank which 'will' act like the engine runs out of gas. You can be driving along and then it starves for gas and bogs, then it stalls and acts like there is no gas. A quick test for a blocked filter is to open the gas cap when it 'runs out of gas'. If you get a hiss and it runs again, the filter is more than dirty, it is blocked. I have had to come home from the mud pits with the gas cap open several times. The filter, sometimes called an evaporation system or emissions filter, is on the bottom of the charcoal canister and is a 'real' pain in the butt to change the first time. I needed a hammer and chisel to get my filter out of the canister and many squirts of penetrating oil on the clamp. Actually I think I gave up on the clamp and just unbolted it from the firewall. Once out, the new one just tucks in. This filter is supposed to be changed the same time as the spark plugs. Mike 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's - Gone to the rust pile... Canadian Off Road Trips Photos: Non members can still view! Jan/06 http://www.imagestation.com/album/pi...?id=2115147590 (More Off Road album links at bottom of the view page) |
Re: pcv breather smoking
88yj wrote:
> when my car is running, usually after it gets hot, the pcv breather > starts blowing white smoke. what is causing this? > internet tells me the piston rings are bad and combustion is occuring > where it should not. are there any other possibilities? (preferably > with an easier fix). can it cause further damage to the engine by > running it as this is happening? should i unplug it? is it bad for > this smoke to get back to the air filter and down the carb? > > any help is appreciated. thanks > You are still implying to me that the plumbing to the gas tank is messed up..... Did you figure out 'why' you keep running out of gas? Could the lines running back there have gotten mixed up? One reason I ask this is because one (well two that go into one) of the lines leading to the gas tank is it's air vent, or charcoal canister. If this is not working or plumbed correctly, you will get 'blowby' or smoke and oil spitting back into the air filter. If you are getting oil into the air filter as well as smoke, please confirm this and I will walk you through one set of tests. First off you need to pull out the front PCV valve and confirm it rattles freely. If not, replace it, it is the likely cause if bad. If just smoke, then maybe it is time to change the air filter on the gas tank vent. When this $2.00 filter blocks up from mud or dust, it puts a vacuum on the gas tank which 'will' act like the engine runs out of gas. You can be driving along and then it starves for gas and bogs, then it stalls and acts like there is no gas. A quick test for a blocked filter is to open the gas cap when it 'runs out of gas'. If you get a hiss and it runs again, the filter is more than dirty, it is blocked. I have had to come home from the mud pits with the gas cap open several times. The filter, sometimes called an evaporation system or emissions filter, is on the bottom of the charcoal canister and is a 'real' pain in the butt to change the first time. I needed a hammer and chisel to get my filter out of the canister and many squirts of penetrating oil on the clamp. Actually I think I gave up on the clamp and just unbolted it from the firewall. Once out, the new one just tucks in. This filter is supposed to be changed the same time as the spark plugs. Mike 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's - Gone to the rust pile... Canadian Off Road Trips Photos: Non members can still view! Jan/06 http://www.imagestation.com/album/pi...?id=2115147590 (More Off Road album links at bottom of the view page) |
Re: pcv breather smoking
On Sep 19, 12:18 pm, Mike Romain <roma...@sympatico.ca> wrote:
> 88yj wrote: > > when my car is running, usually after it gets hot, the pcv breather > > starts blowing white smoke. what is causing this? > > internet tells me the piston rings are bad and combustion is occuring > > where it should not. are there any other possibilities? (preferably > > with an easier fix). can it cause further damage to the engine by > > running it as this is happening? should i unplug it? is it bad for > > this smoke to get back to the air filter and down the carb? > > > any help is appreciated. thanks > > You are still implying to me that the plumbing to the gas tank is messed > up..... > > Did you figure out 'why' you keep running out of gas? > > Could the lines running back there have gotten mixed up? > > One reason I ask this is because one (well two that go into one) of the > lines leading to the gas tank is it's air vent, or charcoal canister. > If this is not working or plumbed correctly, you will get 'blowby' or > smoke and oil spitting back into the air filter. > > If you are getting oil into the air filter as well as smoke, please > confirm this and I will walk you through one set of tests. > > First off you need to pull out the front PCV valve and confirm it > rattles freely. If not, replace it, it is the likely cause if bad. > > If just smoke, then maybe it is time to change the air filter on the gas > tank vent. When this $2.00 filter blocks up from mud or dust, it puts a > vacuum on the gas tank which 'will' act like the engine runs out of gas. > You can be driving along and then it starves for gas and bogs, then it > stalls and acts like there is no gas. A quick test for a blocked filter > is to open the gas cap when it 'runs out of gas'. If you get a hiss and > it runs again, the filter is more than dirty, it is blocked. > > I have had to come home from the mud pits with the gas cap open several > times. > > The filter, sometimes called an evaporation system or emissions filter, > is on the bottom of the charcoal canister and is a 'real' pain in the > butt to change the first time. I needed a hammer and chisel to get my > filter out of the canister and many squirts of penetrating oil on the > clamp. Actually I think I gave up on the clamp and just unbolted it > from the firewall. Once out, the new one just tucks in. > > This filter is supposed to be changed the same time as the spark plugs. > > Mike > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 > 88 Cherokee 235 BFG AT's - Gone to the rust pile... > Canadian Off Road Trips Photos: Non members can still view! > Jan/06http://www.imagestation.com/album/pictures.html?id=2115147590 > (More Off Road album links at bottom of the view page) i feel like a real jackass saying this but it might of just been out of gas the whole time. i put a gallon in it today and its been running fine. i think when i did this before i just looked past the fact that it would take time to pump the new gas up the fuel line, so when i cranked and nothing happened i just assumed it was still not working. ha, anyways, i still cant believe that was the problem and still have a nasty feeling its gonna happen again, but until then.... i looked closer at the pcv going from the breather to the air filter but didnt see any oil, whether car was running or not. i also noticed a little white or maybe grey smoke from the exhuast. i believe it stopped but might be relevant. i am not sure what you mean by rattling the front of the pcv valve. are we talking about the same hose as the breather or a different one, if so where, and even if you do mean the same one, where should it rattle? i also am not sure where the gas tank vent is either, so i have not yet checked the filter. ive been looking for a diagram to find it but havent had any luck yet. |
Re: pcv breather smoking
On Sep 19, 12:18 pm, Mike Romain <roma...@sympatico.ca> wrote:
> 88yj wrote: > > when my car is running, usually after it gets hot, the pcv breather > > starts blowing white smoke. what is causing this? > > internet tells me the piston rings are bad and combustion is occuring > > where it should not. are there any other possibilities? (preferably > > with an easier fix). can it cause further damage to the engine by > > running it as this is happening? should i unplug it? is it bad for > > this smoke to get back to the air filter and down the carb? > > > any help is appreciated. thanks > > You are still implying to me that the plumbing to the gas tank is messed > up..... > > Did you figure out 'why' you keep running out of gas? > > Could the lines running back there have gotten mixed up? > > One reason I ask this is because one (well two that go into one) of the > lines leading to the gas tank is it's air vent, or charcoal canister. > If this is not working or plumbed correctly, you will get 'blowby' or > smoke and oil spitting back into the air filter. > > If you are getting oil into the air filter as well as smoke, please > confirm this and I will walk you through one set of tests. > > First off you need to pull out the front PCV valve and confirm it > rattles freely. If not, replace it, it is the likely cause if bad. > > If just smoke, then maybe it is time to change the air filter on the gas > tank vent. When this $2.00 filter blocks up from mud or dust, it puts a > vacuum on the gas tank which 'will' act like the engine runs out of gas. > You can be driving along and then it starves for gas and bogs, then it > stalls and acts like there is no gas. A quick test for a blocked filter > is to open the gas cap when it 'runs out of gas'. If you get a hiss and > it runs again, the filter is more than dirty, it is blocked. > > I have had to come home from the mud pits with the gas cap open several > times. > > The filter, sometimes called an evaporation system or emissions filter, > is on the bottom of the charcoal canister and is a 'real' pain in the > butt to change the first time. I needed a hammer and chisel to get my > filter out of the canister and many squirts of penetrating oil on the > clamp. Actually I think I gave up on the clamp and just unbolted it > from the firewall. Once out, the new one just tucks in. > > This filter is supposed to be changed the same time as the spark plugs. > > Mike > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 > 88 Cherokee 235 BFG AT's - Gone to the rust pile... > Canadian Off Road Trips Photos: Non members can still view! > Jan/06http://www.imagestation.com/album/pictures.html?id=2115147590 > (More Off Road album links at bottom of the view page) i feel like a real jackass saying this but it might of just been out of gas the whole time. i put a gallon in it today and its been running fine. i think when i did this before i just looked past the fact that it would take time to pump the new gas up the fuel line, so when i cranked and nothing happened i just assumed it was still not working. ha, anyways, i still cant believe that was the problem and still have a nasty feeling its gonna happen again, but until then.... i looked closer at the pcv going from the breather to the air filter but didnt see any oil, whether car was running or not. i also noticed a little white or maybe grey smoke from the exhuast. i believe it stopped but might be relevant. i am not sure what you mean by rattling the front of the pcv valve. are we talking about the same hose as the breather or a different one, if so where, and even if you do mean the same one, where should it rattle? i also am not sure where the gas tank vent is either, so i have not yet checked the filter. ive been looking for a diagram to find it but havent had any luck yet. |
Re: pcv breather smoking
On Sep 19, 12:18 pm, Mike Romain <roma...@sympatico.ca> wrote:
> 88yj wrote: > > when my car is running, usually after it gets hot, the pcv breather > > starts blowing white smoke. what is causing this? > > internet tells me the piston rings are bad and combustion is occuring > > where it should not. are there any other possibilities? (preferably > > with an easier fix). can it cause further damage to the engine by > > running it as this is happening? should i unplug it? is it bad for > > this smoke to get back to the air filter and down the carb? > > > any help is appreciated. thanks > > You are still implying to me that the plumbing to the gas tank is messed > up..... > > Did you figure out 'why' you keep running out of gas? > > Could the lines running back there have gotten mixed up? > > One reason I ask this is because one (well two that go into one) of the > lines leading to the gas tank is it's air vent, or charcoal canister. > If this is not working or plumbed correctly, you will get 'blowby' or > smoke and oil spitting back into the air filter. > > If you are getting oil into the air filter as well as smoke, please > confirm this and I will walk you through one set of tests. > > First off you need to pull out the front PCV valve and confirm it > rattles freely. If not, replace it, it is the likely cause if bad. > > If just smoke, then maybe it is time to change the air filter on the gas > tank vent. When this $2.00 filter blocks up from mud or dust, it puts a > vacuum on the gas tank which 'will' act like the engine runs out of gas. > You can be driving along and then it starves for gas and bogs, then it > stalls and acts like there is no gas. A quick test for a blocked filter > is to open the gas cap when it 'runs out of gas'. If you get a hiss and > it runs again, the filter is more than dirty, it is blocked. > > I have had to come home from the mud pits with the gas cap open several > times. > > The filter, sometimes called an evaporation system or emissions filter, > is on the bottom of the charcoal canister and is a 'real' pain in the > butt to change the first time. I needed a hammer and chisel to get my > filter out of the canister and many squirts of penetrating oil on the > clamp. Actually I think I gave up on the clamp and just unbolted it > from the firewall. Once out, the new one just tucks in. > > This filter is supposed to be changed the same time as the spark plugs. > > Mike > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 > 88 Cherokee 235 BFG AT's - Gone to the rust pile... > Canadian Off Road Trips Photos: Non members can still view! > Jan/06http://www.imagestation.com/album/pictures.html?id=2115147590 > (More Off Road album links at bottom of the view page) i feel like a real jackass saying this but it might of just been out of gas the whole time. i put a gallon in it today and its been running fine. i think when i did this before i just looked past the fact that it would take time to pump the new gas up the fuel line, so when i cranked and nothing happened i just assumed it was still not working. ha, anyways, i still cant believe that was the problem and still have a nasty feeling its gonna happen again, but until then.... i looked closer at the pcv going from the breather to the air filter but didnt see any oil, whether car was running or not. i also noticed a little white or maybe grey smoke from the exhuast. i believe it stopped but might be relevant. i am not sure what you mean by rattling the front of the pcv valve. are we talking about the same hose as the breather or a different one, if so where, and even if you do mean the same one, where should it rattle? i also am not sure where the gas tank vent is either, so i have not yet checked the filter. ive been looking for a diagram to find it but havent had any luck yet. |
Re: pcv breather smoking
On Sep 19, 12:18 pm, Mike Romain <roma...@sympatico.ca> wrote:
> 88yj wrote: > > when my car is running, usually after it gets hot, the pcv breather > > starts blowing white smoke. what is causing this? > > internet tells me the piston rings are bad and combustion is occuring > > where it should not. are there any other possibilities? (preferably > > with an easier fix). can it cause further damage to the engine by > > running it as this is happening? should i unplug it? is it bad for > > this smoke to get back to the air filter and down the carb? > > > any help is appreciated. thanks > > You are still implying to me that the plumbing to the gas tank is messed > up..... > > Did you figure out 'why' you keep running out of gas? > > Could the lines running back there have gotten mixed up? > > One reason I ask this is because one (well two that go into one) of the > lines leading to the gas tank is it's air vent, or charcoal canister. > If this is not working or plumbed correctly, you will get 'blowby' or > smoke and oil spitting back into the air filter. > > If you are getting oil into the air filter as well as smoke, please > confirm this and I will walk you through one set of tests. > > First off you need to pull out the front PCV valve and confirm it > rattles freely. If not, replace it, it is the likely cause if bad. > > If just smoke, then maybe it is time to change the air filter on the gas > tank vent. When this $2.00 filter blocks up from mud or dust, it puts a > vacuum on the gas tank which 'will' act like the engine runs out of gas. > You can be driving along and then it starves for gas and bogs, then it > stalls and acts like there is no gas. A quick test for a blocked filter > is to open the gas cap when it 'runs out of gas'. If you get a hiss and > it runs again, the filter is more than dirty, it is blocked. > > I have had to come home from the mud pits with the gas cap open several > times. > > The filter, sometimes called an evaporation system or emissions filter, > is on the bottom of the charcoal canister and is a 'real' pain in the > butt to change the first time. I needed a hammer and chisel to get my > filter out of the canister and many squirts of penetrating oil on the > clamp. Actually I think I gave up on the clamp and just unbolted it > from the firewall. Once out, the new one just tucks in. > > This filter is supposed to be changed the same time as the spark plugs. > > Mike > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 > 88 Cherokee 235 BFG AT's - Gone to the rust pile... > Canadian Off Road Trips Photos: Non members can still view! > Jan/06http://www.imagestation.com/album/pictures.html?id=2115147590 > (More Off Road album links at bottom of the view page) i feel like a real jackass saying this but it might of just been out of gas the whole time. i put a gallon in it today and its been running fine. i think when i did this before i just looked past the fact that it would take time to pump the new gas up the fuel line, so when i cranked and nothing happened i just assumed it was still not working. ha, anyways, i still cant believe that was the problem and still have a nasty feeling its gonna happen again, but until then.... i looked closer at the pcv going from the breather to the air filter but didnt see any oil, whether car was running or not. i also noticed a little white or maybe grey smoke from the exhuast. i believe it stopped but might be relevant. i am not sure what you mean by rattling the front of the pcv valve. are we talking about the same hose as the breather or a different one, if so where, and even if you do mean the same one, where should it rattle? i also am not sure where the gas tank vent is either, so i have not yet checked the filter. ive been looking for a diagram to find it but havent had any luck yet. |
Re: pcv breather smoking
88yj wrote:
> On Sep 19, 12:18 pm, Mike Romain <roma...@sympatico.ca> wrote: >> 88yj wrote: >>> when my car is running, usually after it gets hot, the pcv breather >>> starts blowing white smoke. what is causing this? <snip> It might of just been out > of gas the whole time. i put a gallon in it today and its been > running fine. You wouldn't be the first person to get caught that way... > > > i looked closer at the pcv going from the breather to the air filter > but didnt see any oil, whether car was running or not. i also noticed > a little white or maybe grey smoke from the exhuast. i believe it > stopped but might be relevant. i am not sure what you mean by > rattling the front of the pcv valve. are we talking about the same > hose as the breather or a different one, if so where, and even if you > do mean the same one, where should it rattle? i also am not sure > where the gas tank vent is either, so i have not yet checked the > filter. ive been looking for a diagram to find it but havent had any > luck yet. > The PCV valve is stuck in the top front of the valve cover. It has a tube running to the back of the carb along side the valve cover. You pull this valve out of the top of the valve cover and shake it. The hose running from the back top of the valve cover is the air 'intake' to the engine, that is why it has a little filter in there. Some white smoke coming out of this at certain times is normal, the PCV valve will suck most of these fumes back into the base of the carb if they don't go in the top, but the PCV does 'not' suck all the time. Here is a good site you should browse around: http://home.sprynet.com/~dale02/list.htm The charcoal canister is 'Waaaayyyy' down under the washer bottle at the bottom of the inside fender. I moved mine up under my brake booster to keep it out of the mud... Mike 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's - Gone to the rust pile... Canadian Off Road Trips Photos: Non members can still view! Jan/06 http://www.imagestation.com/album/pi...?id=2115147590 (More Off Road album links at bottom of the view page) |
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