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Oil Leak
I have a 93 Wrangler 4 cyl. Oil is forcing or I should say spewing out of the top of the dipstick on a cold start up. Does not seem as bad after the car has been driven or on repeat start ups...just maily in the morning on a cold start. I know my model jeep does not have a PCV Valve...Does anyone have suggestions as to the cause?
Oil pressure on cold start sometimes will peg around 80 and then drops back down after about 45 seconds and I assume the pressure is being released at the dipstick. |
Re: Oil Leak
Overfilled maybe?
-- JimG 80' CJ-7, 258 CID 35" BFG MT's on 15x10 Centerlines 4.56 D30-D44 SOA D300 w/4:1 & Currie twin sticks Warn 8000i w/dual batteries LockRight F&R "coloneps" <cspeno@pct.edu> wrote in message news:6ccc91cfc078ed515673433282f07472@localhost.ta lkaboutautos.com... > I have a 93 Wrangler 4 cyl. Oil is forcing or I should say spewing out of the top of the dipstick on a cold start up. Does not seem as bad after the car has been driven or on repeat start ups...just maily in the morning on a cold start. I know my model jeep does not have a PCV Valve...Does anyone have suggestions as to the cause? > > Oil pressure on cold start sometimes will peg around 80 and then drops back down after about 45 seconds and I assume the pressure is being released at the dipstick. > |
Re: Oil Leak
Overfilled maybe?
-- JimG 80' CJ-7, 258 CID 35" BFG MT's on 15x10 Centerlines 4.56 D30-D44 SOA D300 w/4:1 & Currie twin sticks Warn 8000i w/dual batteries LockRight F&R "coloneps" <cspeno@pct.edu> wrote in message news:6ccc91cfc078ed515673433282f07472@localhost.ta lkaboutautos.com... > I have a 93 Wrangler 4 cyl. Oil is forcing or I should say spewing out of the top of the dipstick on a cold start up. Does not seem as bad after the car has been driven or on repeat start ups...just maily in the morning on a cold start. I know my model jeep does not have a PCV Valve...Does anyone have suggestions as to the cause? > > Oil pressure on cold start sometimes will peg around 80 and then drops back down after about 45 seconds and I assume the pressure is being released at the dipstick. > |
Re: Oil Leak
Overfilled maybe?
-- JimG 80' CJ-7, 258 CID 35" BFG MT's on 15x10 Centerlines 4.56 D30-D44 SOA D300 w/4:1 & Currie twin sticks Warn 8000i w/dual batteries LockRight F&R "coloneps" <cspeno@pct.edu> wrote in message news:6ccc91cfc078ed515673433282f07472@localhost.ta lkaboutautos.com... > I have a 93 Wrangler 4 cyl. Oil is forcing or I should say spewing out of the top of the dipstick on a cold start up. Does not seem as bad after the car has been driven or on repeat start ups...just maily in the morning on a cold start. I know my model jeep does not have a PCV Valve...Does anyone have suggestions as to the cause? > > Oil pressure on cold start sometimes will peg around 80 and then drops back down after about 45 seconds and I assume the pressure is being released at the dipstick. > |
Re: Oil Leak
No, the oil pressure is not being relieved at the dipstick. Your jeep does
have a Positive Crankcase Ventilation system(PCV), it's the law. It may not be a PCV valve as you're used to seeing, but somewhere crankcase vapor is being drawn out and fresh filtered air allowed to replace it. The problem is your PCV system is freezing up. Check the suction side and the vent side that runs back to the air cleaner. This is usually caused by insufficient oil change interval for the type of driving that you're doing. If you drive short distances in cold weather the engine doesn't get hot enough long enough to evaporate the moisture and condensation that forms in the crankcase. This moisture freese up on the PCV system and with no crankcase venting the pressure that builds in the crankcase (yes there is trace amounts of compression blowby even in brand new engines) has nowhere to go and rises until it pushes the dipstick out and spews oil when it does. Go run your jeep for a couple of hours (under load, not idling in the driveway), then while it's still hot drop the oil and filter. Check all of the connecting vent hosing and change the PCV valve. Refill with oil and you should be good to go. Steve "coloneps" <cspeno@pct.edu> wrote in message news:6ccc91cfc078ed515673433282f07472@localhost.ta lkaboutautos.com... > I have a 93 Wrangler 4 cyl. Oil is forcing or I should say spewing out of the top of the dipstick on a cold start up. Does not seem as bad after the car has been driven or on repeat start ups...just maily in the morning on a cold start. I know my model jeep does not have a PCV Valve...Does anyone have suggestions as to the cause? > > Oil pressure on cold start sometimes will peg around 80 and then drops back down after about 45 seconds and I assume the pressure is being released at the dipstick. > |
Re: Oil Leak
No, the oil pressure is not being relieved at the dipstick. Your jeep does
have a Positive Crankcase Ventilation system(PCV), it's the law. It may not be a PCV valve as you're used to seeing, but somewhere crankcase vapor is being drawn out and fresh filtered air allowed to replace it. The problem is your PCV system is freezing up. Check the suction side and the vent side that runs back to the air cleaner. This is usually caused by insufficient oil change interval for the type of driving that you're doing. If you drive short distances in cold weather the engine doesn't get hot enough long enough to evaporate the moisture and condensation that forms in the crankcase. This moisture freese up on the PCV system and with no crankcase venting the pressure that builds in the crankcase (yes there is trace amounts of compression blowby even in brand new engines) has nowhere to go and rises until it pushes the dipstick out and spews oil when it does. Go run your jeep for a couple of hours (under load, not idling in the driveway), then while it's still hot drop the oil and filter. Check all of the connecting vent hosing and change the PCV valve. Refill with oil and you should be good to go. Steve "coloneps" <cspeno@pct.edu> wrote in message news:6ccc91cfc078ed515673433282f07472@localhost.ta lkaboutautos.com... > I have a 93 Wrangler 4 cyl. Oil is forcing or I should say spewing out of the top of the dipstick on a cold start up. Does not seem as bad after the car has been driven or on repeat start ups...just maily in the morning on a cold start. I know my model jeep does not have a PCV Valve...Does anyone have suggestions as to the cause? > > Oil pressure on cold start sometimes will peg around 80 and then drops back down after about 45 seconds and I assume the pressure is being released at the dipstick. > |
Re: Oil Leak
No, the oil pressure is not being relieved at the dipstick. Your jeep does
have a Positive Crankcase Ventilation system(PCV), it's the law. It may not be a PCV valve as you're used to seeing, but somewhere crankcase vapor is being drawn out and fresh filtered air allowed to replace it. The problem is your PCV system is freezing up. Check the suction side and the vent side that runs back to the air cleaner. This is usually caused by insufficient oil change interval for the type of driving that you're doing. If you drive short distances in cold weather the engine doesn't get hot enough long enough to evaporate the moisture and condensation that forms in the crankcase. This moisture freese up on the PCV system and with no crankcase venting the pressure that builds in the crankcase (yes there is trace amounts of compression blowby even in brand new engines) has nowhere to go and rises until it pushes the dipstick out and spews oil when it does. Go run your jeep for a couple of hours (under load, not idling in the driveway), then while it's still hot drop the oil and filter. Check all of the connecting vent hosing and change the PCV valve. Refill with oil and you should be good to go. Steve "coloneps" <cspeno@pct.edu> wrote in message news:6ccc91cfc078ed515673433282f07472@localhost.ta lkaboutautos.com... > I have a 93 Wrangler 4 cyl. Oil is forcing or I should say spewing out of the top of the dipstick on a cold start up. Does not seem as bad after the car has been driven or on repeat start ups...just maily in the morning on a cold start. I know my model jeep does not have a PCV Valve...Does anyone have suggestions as to the cause? > > Oil pressure on cold start sometimes will peg around 80 and then drops back down after about 45 seconds and I assume the pressure is being released at the dipstick. > |
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