Gas in the oil
- Thread starter BoostedSUV
- Start date
BoostedSUV
Active member
Re: Gas in the oil
The truck idles around 12-15hg. I always assumed it was the cam, the motor is fresh.
The truck idles around 12-15hg. I always assumed it was the cam, the motor is fresh.
BoostedSUV
Active member
Re: Gas in the oil
I have the 422 cam. Vac at idle has always been low since putting the motor back together.
I have the 422 cam. Vac at idle has always been low since putting the motor back together.
RealFastV6
@jb_and_his_coffee
Getting down to 10 psi in an hour is too fast. My Typhoon hasn't been started in a month and still has fuel pressure. I think an injector leaking down is getting to be more of a possibility.
Could explain the hard restarts too.
Could explain the hard restarts too.
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BoostedSUV
Active member
Re: Gas in the oil
That's what I was thinking too. I'm going to pull some plugs and see if anything looks wet
That's what I was thinking too. I'm going to pull some plugs and see if anything looks wet
Don W.
Stab it and steer it
Re: Gas in the oil
Ya I think this is a clue. When you floor the throttle while starting it goes into flood mode and stops firing the injs. This allows the excess fuel to clear and motor to start. It fires, you let up on it but there is still gonna some excess fuel hence the rough running for a bit after it does start.
Pulling the plugs will, hopefully, help isolate the culprit bit I'd sure be tempted to send all the injs off for diag. I used these folks from recommendations here and had excellent service.
http://www.rceng.com/
HTH
Ya I think this is a clue. When you floor the throttle while starting it goes into flood mode and stops firing the injs. This allows the excess fuel to clear and motor to start. It fires, you let up on it but there is still gonna some excess fuel hence the rough running for a bit after it does start.
Pulling the plugs will, hopefully, help isolate the culprit bit I'd sure be tempted to send all the injs off for diag. I used these folks from recommendations here and had excellent service.
http://www.rceng.com/
HTH
T-Bone
Active member
Re: Gas in the oil
Had the exact same issue occur a couple years ago....truck sat in the garage more than driven. Started it one day to take the wife to dinner and noticed it smoked some black smoke (which it never did before). Consumed way more fuel than usual. Was hard to start after it got hot and would only restart with WOT and putter it's way to clear rev's. Oil smelled like fuel. Performance shop diagnosed the #1 injector locked wide open. Replaced it and walla...no future issues.
Find the wet plug and pull the associated injector. 99% sure you will solve your problem.
PS - I would NOT drive your truck until this issue is correctly resolved or your wallet is gonna suffer big-time.
Had the exact same issue occur a couple years ago....truck sat in the garage more than driven. Started it one day to take the wife to dinner and noticed it smoked some black smoke (which it never did before). Consumed way more fuel than usual. Was hard to start after it got hot and would only restart with WOT and putter it's way to clear rev's. Oil smelled like fuel. Performance shop diagnosed the #1 injector locked wide open. Replaced it and walla...no future issues.
Find the wet plug and pull the associated injector. 99% sure you will solve your problem.
PS - I would NOT drive your truck until this issue is correctly resolved or your wallet is gonna suffer big-time.
RealFastV6
@jb_and_his_coffee
Re: Gas in the oil
Lots of words.
Pull the plugs and tell us which one is shiny black.
Lots of words.
Pull the plugs and tell us which one is shiny black.
BoostedSUV
Active member
Re: Gas in the oil
Thanks guys! I'm going to pull plugs today and see if any are indicating a stuck injector. (Injectors are pretty new and I had hard starting problem with old injectors too)
T-bone I'm not going to drive the tuck until I figure it out. Everything is fresh and I'm not going to hurt the motor.
Dave, the hard start issue existed in my old truck ad well. (Remember the one that had rpm specific miss fires?). That problem is gone but it still doesn't want to start once it's warmed up and I shut it off. Usually after it does start it throws a code 43 or 42. Can't remember which off hand. I have another complete distributor I can try. I've always had my suspicions a point towards the msd billet dizzy and coil.
I have some data logs of the hard start cranking showing what the truck does when it cranks and tries start. Rpm line looks a w going from 0 to 7000 (still just cranking) and the injectors spray excessive fuel.
It's been an on going issue but I never drive the truck so I just ignore and let the truck sit in garage. I really want to straighten it all out and drive it.
Thanks guys! I'm going to pull plugs today and see if any are indicating a stuck injector. (Injectors are pretty new and I had hard starting problem with old injectors too)
T-bone I'm not going to drive the tuck until I figure it out. Everything is fresh and I'm not going to hurt the motor.
Dave, the hard start issue existed in my old truck ad well. (Remember the one that had rpm specific miss fires?). That problem is gone but it still doesn't want to start once it's warmed up and I shut it off. Usually after it does start it throws a code 43 or 42. Can't remember which off hand. I have another complete distributor I can try. I've always had my suspicions a point towards the msd billet dizzy and coil.
I have some data logs of the hard start cranking showing what the truck does when it cranks and tries start. Rpm line looks a w going from 0 to 7000 (still just cranking) and the injectors spray excessive fuel.
It's been an on going issue but I never drive the truck so I just ignore and let the truck sit in garage. I really want to straighten it all out and drive it.
BoostedSUV
Active member
Re: Gas in the oil
Definitely code 42 then Dave. I knew one was EST and one was knock sensor just couldn't remember which was which without looking it up. I have a brand new stock dizzy I can put in. Just sucks I paid all that money for the msd and it's junk. I've replaced the pickup and the ign module in it so I would of liked to believe that's not the problem.
I remember years ago the truck would not start hot at all. I unplugged the msd coil and plugged in the stock one. Fired right up... So I bought a new msd coil. Sounds like I'm creating my own problems!
Definitely code 42 then Dave. I knew one was EST and one was knock sensor just couldn't remember which was which without looking it up. I have a brand new stock dizzy I can put in. Just sucks I paid all that money for the msd and it's junk. I've replaced the pickup and the ign module in it so I would of liked to believe that's not the problem.
I remember years ago the truck would not start hot at all. I unplugged the msd coil and plugged in the stock one. Fired right up... So I bought a new msd coil. Sounds like I'm creating my own problems!
BoostedSUV
Active member
Re: Gas in the oil
Pulled all the plugs. They're all pig rich black but #1 had a slight amount of visible gas on it. Take into account the truck mostly idles in and out of garage and I haven't driven it much at all.
I cranked the truck with the plugs out (after letting the fuel pressure drop to 0 over night) no raw fuel came out of any of the cylinders. I think I can rule out injectors
Pulled all the plugs. They're all pig rich black but #1 had a slight amount of visible gas on it. Take into account the truck mostly idles in and out of garage and I haven't driven it much at all.
I cranked the truck with the plugs out (after letting the fuel pressure drop to 0 over night) no raw fuel came out of any of the cylinders. I think I can rule out injectors
BoostedSUV
Active member
Re: Gas in the oil
Good thought Dave and easy enough to try.
Good thought Dave and easy enough to try.
BoostedSUV
Active member
Re: Gas in the oil
Clearly there's an issue. I don't want to just throw plugs and oil at it only to ruin them again.
Clearly there's an issue. I don't want to just throw plugs and oil at it only to ruin them again.
92 Ty 1173
Active member
Re: Gas in the oil
Not to jack the thread but Dave, you don't recommend MSD or Taylor,, what so u recommend for wires and dizzy? I run a stock dizy but Taylor wires and haven't had any issues. I have to change out my Sy wires soon, just curious. Thanks.
Like someone said earlier there a few way for gas in you oil. Leaking FPR regulator would make it idle like crap but it would need to dump a ton of fuel that would have to leak past your rings while running. Plus it would have spit fuel at you when you pulled the vacuum line while it was running. I have to agree with dave that it is injector related.
Not to jack the thread but Dave, you don't recommend MSD or Taylor,, what so u recommend for wires and dizzy? I run a stock dizy but Taylor wires and haven't had any issues. I have to change out my Sy wires soon, just curious. Thanks.
Like someone said earlier there a few way for gas in you oil. Leaking FPR regulator would make it idle like crap but it would need to dump a ton of fuel that would have to leak past your rings while running. Plus it would have spit fuel at you when you pulled the vacuum line while it was running. I have to agree with dave that it is injector related.
BoostedSUV
Active member
Re: Gas in the oil
It idles pig rich when it starts up cold. I might have to look into the tune and see if I can lean it out during cold idle. It doesn't seem like an injector issue based on what I tried today. I expected to find a cylinder full of fuel when I pulled the plugs. All the plugs looked equally rich with the exception of number 1 having a little gas on the tip.
Since Nolan tuned it I change to the 422 cam (from a 412) but I can't see that fattening it up that much at idle. I really don't want to start throwing parts at it. I want to find something clearly wrong. Like I said early, everything is pretty much new.
It idles pig rich when it starts up cold. I might have to look into the tune and see if I can lean it out during cold idle. It doesn't seem like an injector issue based on what I tried today. I expected to find a cylinder full of fuel when I pulled the plugs. All the plugs looked equally rich with the exception of number 1 having a little gas on the tip.
Since Nolan tuned it I change to the 422 cam (from a 412) but I can't see that fattening it up that much at idle. I really don't want to start throwing parts at it. I want to find something clearly wrong. Like I said early, everything is pretty much new.
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BoostedSUV
Active member
Re: Gas in the oil
I ordered a rebuild kit for my accufab afpr (even though I don't think it's the problem). I'm also going to throw new plugs and fresh oil in it. I have a feeling nothing is going to change.
I ordered a rebuild kit for my accufab afpr (even though I don't think it's the problem). I'm also going to throw new plugs and fresh oil in it. I have a feeling nothing is going to change.
The Dread Pirate Fisher
Donating Member
Re: Gas in the oil
Have you checked ohm resistance on the injectors?
Have you checked ohm resistance on the injectors?
RealFastV6
@jb_and_his_coffee
Re: Gas in the oil
That's ok we can all wait for next year's thread of the same topic to shotgun suggestions.
That's ok we can all wait for next year's thread of the same topic to shotgun suggestions.