87 YJ 258 Cold start problems (Long)
12-10-2003, 05:41 PM
#21
Guest
Posts: n/a
Re: 87 YJ 258 Cold start problems (Long)
I had the same problem with my 89 YJ. I too have the same blow-by and valve
cover leaks.
Here are a few things my mechanic and I figured out that worked:
1) Put in a paper air filter. The K&N let in too much air and messes with the
mixture. Your Dodge dealer set the idle and mixture to factory specs, which is
with a paper filter.
2) Check your EGR valve. It should be replaced every 80,000 miles. Make sure
you have suction at the EGR valve too.
3) The Air Filter assembly will bend the choke if you put it on too fast.
Check to see if it is bent. If it is bend you will notice you have to rev it
alot on cold mornings to keep it from stalling, and it will stall at every stop
light until it is really warmed up.
4) did you get a rebuilt carb? 1 out of 2 of the rebuilts tend to be bad.
Make sure the carb linkage is not greased. They are not meant to be lubed on
these carbs.
5) My mechanic told me, that the 258 and carter carb should always use Premium
Fuel, and it has helped me since I started using it. When I am near the ocean
I need to dump Octane Booster in it just to keep it running.
6) You probably have 2 pipes that run from the cat back into the engine. Make
sure these are connected.
7) Make sure your preheater hose is not leaking.
8) After all this, have a mechanic check the choke again.
cover leaks.
Here are a few things my mechanic and I figured out that worked:
1) Put in a paper air filter. The K&N let in too much air and messes with the
mixture. Your Dodge dealer set the idle and mixture to factory specs, which is
with a paper filter.
2) Check your EGR valve. It should be replaced every 80,000 miles. Make sure
you have suction at the EGR valve too.
3) The Air Filter assembly will bend the choke if you put it on too fast.
Check to see if it is bent. If it is bend you will notice you have to rev it
alot on cold mornings to keep it from stalling, and it will stall at every stop
light until it is really warmed up.
4) did you get a rebuilt carb? 1 out of 2 of the rebuilts tend to be bad.
Make sure the carb linkage is not greased. They are not meant to be lubed on
these carbs.
5) My mechanic told me, that the 258 and carter carb should always use Premium
Fuel, and it has helped me since I started using it. When I am near the ocean
I need to dump Octane Booster in it just to keep it running.
6) You probably have 2 pipes that run from the cat back into the engine. Make
sure these are connected.
7) Make sure your preheater hose is not leaking.
8) After all this, have a mechanic check the choke again.
12-10-2003, 05:41 PM
#22
Guest
Posts: n/a
Re: 87 YJ 258 Cold start problems (Long)
I had the same problem with my 89 YJ. I too have the same blow-by and valve
cover leaks.
Here are a few things my mechanic and I figured out that worked:
1) Put in a paper air filter. The K&N let in too much air and messes with the
mixture. Your Dodge dealer set the idle and mixture to factory specs, which is
with a paper filter.
2) Check your EGR valve. It should be replaced every 80,000 miles. Make sure
you have suction at the EGR valve too.
3) The Air Filter assembly will bend the choke if you put it on too fast.
Check to see if it is bent. If it is bend you will notice you have to rev it
alot on cold mornings to keep it from stalling, and it will stall at every stop
light until it is really warmed up.
4) did you get a rebuilt carb? 1 out of 2 of the rebuilts tend to be bad.
Make sure the carb linkage is not greased. They are not meant to be lubed on
these carbs.
5) My mechanic told me, that the 258 and carter carb should always use Premium
Fuel, and it has helped me since I started using it. When I am near the ocean
I need to dump Octane Booster in it just to keep it running.
6) You probably have 2 pipes that run from the cat back into the engine. Make
sure these are connected.
7) Make sure your preheater hose is not leaking.
8) After all this, have a mechanic check the choke again.
cover leaks.
Here are a few things my mechanic and I figured out that worked:
1) Put in a paper air filter. The K&N let in too much air and messes with the
mixture. Your Dodge dealer set the idle and mixture to factory specs, which is
with a paper filter.
2) Check your EGR valve. It should be replaced every 80,000 miles. Make sure
you have suction at the EGR valve too.
3) The Air Filter assembly will bend the choke if you put it on too fast.
Check to see if it is bent. If it is bend you will notice you have to rev it
alot on cold mornings to keep it from stalling, and it will stall at every stop
light until it is really warmed up.
4) did you get a rebuilt carb? 1 out of 2 of the rebuilts tend to be bad.
Make sure the carb linkage is not greased. They are not meant to be lubed on
these carbs.
5) My mechanic told me, that the 258 and carter carb should always use Premium
Fuel, and it has helped me since I started using it. When I am near the ocean
I need to dump Octane Booster in it just to keep it running.
6) You probably have 2 pipes that run from the cat back into the engine. Make
sure these are connected.
7) Make sure your preheater hose is not leaking.
8) After all this, have a mechanic check the choke again.
12-10-2003, 07:21 PM
#26
Guest
Posts: n/a
Re: 87 YJ 258 Cold start problems (Long)
I
If it starts fine when you leave a heater under the hood, you can
forget about checking for leaks. You have a problem with your choke.
Drive it around one evening enough to warm it up. Park it overnight,
in the morning (or even better, when you park it) remove the air
cleaner so that you can see into the top of the carb. Now, while
looking down into the top, move the throttle linkage with your hand.
(Give it some gas) You should see the choke plate snap shut.
It looks like a little round baffle, blocking the airflow into the
carb. If this plate doesn't close when you move the throttle linkage,
the choke is not working.
If you take off the air cleaner in the morning, be sure not to hit
the throttle before you can watch it, or you won't see it when it
moves.
Good luck,
and let us know what you find
Tookie
Tookie - Denham Springs, LA
88YJ,"Money Hungry"
4" lift, 33" TSLs, Lock-Rights
PosiLock, 4.10s
If it starts fine when you leave a heater under the hood, you can
forget about checking for leaks. You have a problem with your choke.
Drive it around one evening enough to warm it up. Park it overnight,
in the morning (or even better, when you park it) remove the air
cleaner so that you can see into the top of the carb. Now, while
looking down into the top, move the throttle linkage with your hand.
(Give it some gas) You should see the choke plate snap shut.
It looks like a little round baffle, blocking the airflow into the
carb. If this plate doesn't close when you move the throttle linkage,
the choke is not working.
If you take off the air cleaner in the morning, be sure not to hit
the throttle before you can watch it, or you won't see it when it
moves.
Good luck,
and let us know what you find
Tookie
Tookie - Denham Springs, LA
88YJ,"Money Hungry"
4" lift, 33" TSLs, Lock-Rights
PosiLock, 4.10s
12-10-2003, 07:21 PM
#27
Guest
Posts: n/a
Re: 87 YJ 258 Cold start problems (Long)
I
If it starts fine when you leave a heater under the hood, you can
forget about checking for leaks. You have a problem with your choke.
Drive it around one evening enough to warm it up. Park it overnight,
in the morning (or even better, when you park it) remove the air
cleaner so that you can see into the top of the carb. Now, while
looking down into the top, move the throttle linkage with your hand.
(Give it some gas) You should see the choke plate snap shut.
It looks like a little round baffle, blocking the airflow into the
carb. If this plate doesn't close when you move the throttle linkage,
the choke is not working.
If you take off the air cleaner in the morning, be sure not to hit
the throttle before you can watch it, or you won't see it when it
moves.
Good luck,
and let us know what you find
Tookie
Tookie - Denham Springs, LA
88YJ,"Money Hungry"
4" lift, 33" TSLs, Lock-Rights
PosiLock, 4.10s
If it starts fine when you leave a heater under the hood, you can
forget about checking for leaks. You have a problem with your choke.
Drive it around one evening enough to warm it up. Park it overnight,
in the morning (or even better, when you park it) remove the air
cleaner so that you can see into the top of the carb. Now, while
looking down into the top, move the throttle linkage with your hand.
(Give it some gas) You should see the choke plate snap shut.
It looks like a little round baffle, blocking the airflow into the
carb. If this plate doesn't close when you move the throttle linkage,
the choke is not working.
If you take off the air cleaner in the morning, be sure not to hit
the throttle before you can watch it, or you won't see it when it
moves.
Good luck,
and let us know what you find
Tookie
Tookie - Denham Springs, LA
88YJ,"Money Hungry"
4" lift, 33" TSLs, Lock-Rights
PosiLock, 4.10s
12-10-2003, 07:21 PM
#28
Guest
Posts: n/a
Re: 87 YJ 258 Cold start problems (Long)
I
If it starts fine when you leave a heater under the hood, you can
forget about checking for leaks. You have a problem with your choke.
Drive it around one evening enough to warm it up. Park it overnight,
in the morning (or even better, when you park it) remove the air
cleaner so that you can see into the top of the carb. Now, while
looking down into the top, move the throttle linkage with your hand.
(Give it some gas) You should see the choke plate snap shut.
It looks like a little round baffle, blocking the airflow into the
carb. If this plate doesn't close when you move the throttle linkage,
the choke is not working.
If you take off the air cleaner in the morning, be sure not to hit
the throttle before you can watch it, or you won't see it when it
moves.
Good luck,
and let us know what you find
Tookie
Tookie - Denham Springs, LA
88YJ,"Money Hungry"
4" lift, 33" TSLs, Lock-Rights
PosiLock, 4.10s
If it starts fine when you leave a heater under the hood, you can
forget about checking for leaks. You have a problem with your choke.
Drive it around one evening enough to warm it up. Park it overnight,
in the morning (or even better, when you park it) remove the air
cleaner so that you can see into the top of the carb. Now, while
looking down into the top, move the throttle linkage with your hand.
(Give it some gas) You should see the choke plate snap shut.
It looks like a little round baffle, blocking the airflow into the
carb. If this plate doesn't close when you move the throttle linkage,
the choke is not working.
If you take off the air cleaner in the morning, be sure not to hit
the throttle before you can watch it, or you won't see it when it
moves.
Good luck,
and let us know what you find
Tookie
Tookie - Denham Springs, LA
88YJ,"Money Hungry"
4" lift, 33" TSLs, Lock-Rights
PosiLock, 4.10s
12-10-2003, 07:24 PM
#29
Guest
Posts: n/a
Re: 87 YJ 258 Cold start problems (Long)
On Thu, 11 Dec 2003 00:21:23 GMT, tookie_nospam@***.net (Tookie )
wrote:
in the morning (or even better, when you park it) remove the air
>cleaner so that you can see into the top of the carb. Now, while
>looking down into the top, move the throttle linkage with your hand.
>Tookie - Denham Springs, LA
>88YJ,"Money Hungry"
>4" lift, 33" TSLs, Lock-Rights
>PosiLock, 4.10s
To be clearer, engine has to be cold again before checking it
Tookie - Denham Springs, LA
88YJ,"Money Hungry"
4" lift, 33" TSLs, Lock-Rights
PosiLock, 4.10s
wrote:
in the morning (or even better, when you park it) remove the air
>cleaner so that you can see into the top of the carb. Now, while
>looking down into the top, move the throttle linkage with your hand.
>Tookie - Denham Springs, LA
>88YJ,"Money Hungry"
>4" lift, 33" TSLs, Lock-Rights
>PosiLock, 4.10s
To be clearer, engine has to be cold again before checking it
Tookie - Denham Springs, LA
88YJ,"Money Hungry"
4" lift, 33" TSLs, Lock-Rights
PosiLock, 4.10s
12-10-2003, 07:24 PM
#30
Guest
Posts: n/a
Re: 87 YJ 258 Cold start problems (Long)
On Thu, 11 Dec 2003 00:21:23 GMT, tookie_nospam@***.net (Tookie )
wrote:
in the morning (or even better, when you park it) remove the air
>cleaner so that you can see into the top of the carb. Now, while
>looking down into the top, move the throttle linkage with your hand.
>Tookie - Denham Springs, LA
>88YJ,"Money Hungry"
>4" lift, 33" TSLs, Lock-Rights
>PosiLock, 4.10s
To be clearer, engine has to be cold again before checking it
Tookie - Denham Springs, LA
88YJ,"Money Hungry"
4" lift, 33" TSLs, Lock-Rights
PosiLock, 4.10s
wrote:
in the morning (or even better, when you park it) remove the air
>cleaner so that you can see into the top of the carb. Now, while
>looking down into the top, move the throttle linkage with your hand.
>Tookie - Denham Springs, LA
>88YJ,"Money Hungry"
>4" lift, 33" TSLs, Lock-Rights
>PosiLock, 4.10s
To be clearer, engine has to be cold again before checking it
Tookie - Denham Springs, LA
88YJ,"Money Hungry"
4" lift, 33" TSLs, Lock-Rights
PosiLock, 4.10s