oil cap came off when driving...car missfires

[laser5spdturbo]

well on the way home from the track today...i noticed my car started popping and missing when i hit the gas or when it was under a load but no knocking or anything, just straight popping and missfiring, and when u step on the clutch the car stalls. this happened after i was getting in it pretty hard with a t/a and about 2 minutes from my house....i let the car stall and i coasted it in my driveway...i popped the hood and everything is soaked in oil and i noticed the oil cap blew off somehow....i checked the oil and its still fulll....what do i do?

 

[oldman]

Do a compression test to make sure your rings are ok.

 

[laser5spdturbo]

i could have damaged the rings?!....ill do that tomorrow though anyway....but damn, i hope its not that serious

 

[oldman]

Dude come down, it's just a guess. It seems you have excessive crank case pressure, bad rings, bad pcv valve or in my case, frozen oil catch can. I would also pull the intake pipe and check the turbo for oil as a precaution.

 

[laser5spdturbo]

i dont' even remeber if i tightened it, all i know is when i pulled into my driveway and popped the hood the cap was off and i did stop on the way home from the track and added another quart becuase the seals in the turbo are bad, the motor has 2300 miles on it, it was completely rebuilt with new rod/main bearings, pulleys, tensioners, bsek, but yeah about 10 minutes b4 it started missing and all i did have the cap off and was adding oil ...maybe the coil pack is wet and maybe i fouled a plug out or 2? there was oil all on the valve cover and all i soaked up and i sprayed wd40 on the coil pack and everything maybe to dissolve some of the oil up and let it dry

 

[oldman]

i dont' even remeber if i tightened it, all i know is when i pulled into my driveway and popped the hood the cap was off and i did stop on the way home from the track and added another quart becuase the seals in the turbo are bad, the motor has 2300 miles on it, it was completely rebuilt with new rod/main bearings, pulleys, tensioners, bsek, but yeah about 10 minutes b4 it started missing and all i did have the cap off and was adding oil ...maybe the coil pack is wet and maybe i fouled a plug out or 2? there was oil all on the valve cover and all i soaked up and i sprayed wd40 on the coil pack and everything maybe to dissolve some of the oil up and let it dry

Sounds like you just forgot to close the cap, told you to come down.

 

[laser5spdturbo]

well about 2 hours after i got home now i sprayed it with wd40 and wiped everything down, i started it its not missing or anything or popping but it is stalling still...it will idle for about 10 seconds then stall maybe the connections are still a little wet?! i dont know, hopefully it will all dry up for the morning commute to work. oil pressure is fine , so is temp no knocking yet still loud from a bad exhuast leak, but i did a 14.08 at the track at 91mph in my talon....i sold my laser now i have a 90 talon tsi awd, darkstar cherry red.

 

[steve]

How much oil got on the coils?

Steve

 

[GTM]

Dude come down, it's just a guess. It seems you have excessive crank case pressure, bad rings, bad pcv valve or in my case, frozen oil catch can. I would also pull the intake pipe and check the turbo for oil as a precaution.

I think you mean calm down, for sure I would need to with that mess.

These things will sling a lot of oil out that big hole that has no baffels or wire mesh to trap the oil so it doesn't mean he has blowby. The PCV would not be affected because there is no pressure. Might have had a slight lean mix if the PVC was allowing air to be drawn into the intake because it wasn't a sealed system and air could get into the valve cover.

I'm guessing the car was not level when he checked it, more likely facing down hill since it registered full so he needs to check it again on a flat level place. He should put some sort of a plug in the hole for the commute to work or a parts house. If he has to use a rag, tie a string on it so it too doesn't fall out or into the cams.

I don't know why he should check the turbo since the oil came from the missing cap??

Cheers,
GTM

 

[igopoopy]

i did the same thing and i still cant find the problem
(after like a month)

 

[GTM]

i did the same thing and i still cant find the problem
(after like a month)

What same thing did you do and what problem do you still have?

It might be better if you started a new thread so we don't mix up recommended things to check or questions to ask. It may be something simple that can be answered in one reply but you don't want to hijack someone elses thread if it's an involved problem.

Cheers,
GTM

 

[steve]

It might be better if you started a new thread so we don't mix up recommended things to check or questions to ask.

He's already got three open on his problem
Luis, the right thing to do here rather than post a "me too" in order to track the solution, is click on the thread tools and subscribe.

Steve

 

[GTM]

He's already got three open on his problem
Luis, the right thing to do here rather than post a "me too" in order to track the solution, is click on the thread tools and subscribe.

Steve

That's a big no no, good thing all the chaos is going on as they revamped the board and it slipped past all the Wheels. Guess everybody is putting out fires since their threads got moved to different locations.

Wonder what color those little green boxes change to when you get negative numbers.

Cheers,
GTM

 

[ShaggieRL]

well here's a thought some thing that happened to me when one of my vavle covers got a crack in it (that i didn't know was there) but to the point since our plug wire are right there what happens is either oil will soak into the plug wires or down into the plug chamber if it's not tight on the plug and cuase the voltage to the plug to follw a diffrent resitance path thus arching to the plug chamber or the head and not to the plug change or clean ya wires and look to see if any oil got in the chamber

 

[igopoopy]

What same thing did you do and what problem do you still have?

It might be better if you started a new thread so we don't mix up recommended things to check or questions to ask. It may be something simple that can be answered in one reply but you don't want to hijack someone elses thread if it's an involved problem.

Cheers,
GTM

i didnt put the oil cap on,then i drove it and saw some smoke stoped an put the cap on oil was full ....but my car was popping and missing when i hit the gas or when it was under a just straight popping and missfiring, and when u step on the clutch the car stalls
......but only when its warm ,when its cold it runs fine

He's already got three open on his problem
Luis, the right thing to do here rather than post a "me too" in order to track the solution, is click on the thread tools and subscribe.

Steve

that was the first thing i did

 

[laser5spdturbo]

it turns out my eyes are as bad as my turbo, the oil cap did blow off but the poppin and bucking was due to the upper intercooler piping blowing off ....i put it bak on this morning and everything is fine....hahaha thnx 4 your help guys :laugh:

 

[oldman]

it turns out my eyes are as bad as my turbo, the oil cap did blow off but the poppin and bucking was due to the upper intercooler piping blowing off ....i put it bak on this morning and everything is fine....hahaha thnx 4 your help guys :laugh:

I call for a ban for wasting our time and space.

 

[GTM]

I call for a ban for wasting our time and space.

I don't think this transgression (hehehe) warrants the level which this new point system allows of giving negative points. It does show how difficult it is to diagnose problems without having a hands on experience.

So why did this happen, could it be that with oil being slung all over the engine compartment he had a iffy condition where a slight leak existed and oil seeped in while negative pressures existed only to be forced off when boosted.

The important things is he's back and running with little more than frayed nerves.

Cheers,
GTM

 

[igopoopy]

dam so this thread didnt help any