Gas in the oil
- Thread starter BoostedSUV
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Quickstop [UK]
Combating adversyty.
Re: Gas in the oil
Have you done a compression check on it recently?
Have you done a compression check on it recently?
BoostedSUV
Active member
Re: Gas in the oil
I haven't but the injectors have maybe 500 miles on them since new. Theyre Siemens injectors from racetronix
I haven't but the injectors have maybe 500 miles on them since new. Theyre Siemens injectors from racetronix
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BoostedSUV
Active member
Re: Gas in the oil
The motor is fresh Marc. If theres 500 miles on it since being freshened I would be shocked. Truck just sits because I don't have the time to deal with the little issues. The plugs are out so maybe I'll compression check it tonight.
The motor is fresh Marc. If theres 500 miles on it since being freshened I would be shocked. Truck just sits because I don't have the time to deal with the little issues. The plugs are out so maybe I'll compression check it tonight.
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BoostedSUV
Active member
Re: Gas in the oil
I agree but I really expected to see fuel in a cylinder when I pulled the plugs the next morning. With out seeing the issue I'm not going to start throwing parts at this thing again. If any of you guys remember my old truck and the long thread about the rpm specific miss fire you know I threw a lot of parts at it already. This is a new truck but a lot of the new parts moved over into this one. Including the engine that I freshened when it came out.
I've ignored the truck for pretty much the last 3 years since I bought a house but now I want to straighten it all out finally.
I agree but I really expected to see fuel in a cylinder when I pulled the plugs the next morning. With out seeing the issue I'm not going to start throwing parts at this thing again. If any of you guys remember my old truck and the long thread about the rpm specific miss fire you know I threw a lot of parts at it already. This is a new truck but a lot of the new parts moved over into this one. Including the engine that I freshened when it came out.
I've ignored the truck for pretty much the last 3 years since I bought a house but now I want to straighten it all out finally.
RealFastV6
@jb_and_his_coffee
RealFastV6
@jb_and_his_coffee
Re: Gas in the oil
Hmmmmmmmmmmm.
I can't quite put my finger on it. I guess I'll take a look in the SyTy supplement and see what it says.
Hmmmmmmmmmmm.
I can't quite put my finger on it. I guess I'll take a look in the SyTy supplement and see what it says.
BoostedSUV
Active member
Re: Gas in the oil
So based on your thinking I should just go spend 400 and buy 6 new injectors? Hmmmmn ok
Yes it's obviously running rich idling (which is pretty much all it does lately) but that could be a fuel pressure issue, tune issue, lack off spark issue, timing issue... So really you're just telling me what we already know.
WHY? Is what would help....
So based on your thinking I should just go spend 400 and buy 6 new injectors? Hmmmmn ok
Yes it's obviously running rich idling (which is pretty much all it does lately) but that could be a fuel pressure issue, tune issue, lack off spark issue, timing issue... So really you're just telling me what we already know.
WHY? Is what would help....
BoostedSUV
Active member
Re: Gas in the oil
Honesty I expected one bad plug to point to one stuck injector. All 6 can't be bad.
I'm going to compression test it tonight (for shits and giggles).
Thinking back to when this engine was in my old Ty, it used to idle around 16-18hg in vacuum. At one point the vac dropped to 10-12 at idle and I never figured out why. I since pulled the motor and freshened it, put it in a different truck and it's still has 10-12hg at idle. Me thinking out loud now I think the the reduced vac at idle (extra 5psi in pressure) is making it way too fat at idle.... Just dawned on me
Honesty I expected one bad plug to point to one stuck injector. All 6 can't be bad.
I'm going to compression test it tonight (for shits and giggles).
Thinking back to when this engine was in my old Ty, it used to idle around 16-18hg in vacuum. At one point the vac dropped to 10-12 at idle and I never figured out why. I since pulled the motor and freshened it, put it in a different truck and it's still has 10-12hg at idle. Me thinking out loud now I think the the reduced vac at idle (extra 5psi in pressure) is making it way too fat at idle.... Just dawned on me
e95 Ty
New member
Re: Gas in the oil
#1. I would send a log of the truck running to Nolan or another experienced tuner to look at things..
#2 If the tune looks ok, I would still consider sending the injectors out to at least have them tested to make sure they aren't the culprit...not worth loosing an engine over..I send my injectors out at least once a season just for piece of mind (I had one clog before).
#1. I would send a log of the truck running to Nolan or another experienced tuner to look at things..
#2 If the tune looks ok, I would still consider sending the injectors out to at least have them tested to make sure they aren't the culprit...not worth loosing an engine over..I send my injectors out at least once a season just for piece of mind (I had one clog before).
ajt86
Member
Re: Gas in the oil
by the way the correct way to test a fuel pressure regulator is to first unhook the engine vacume and hook up a hand operated vacume pump with gauge- pump it up to 20" of vacuum and make sure the pressure doesn't bleed off- if it is its a ruptured diaphragm. Then start the engine and release the vacuum and pump it back up while checking the fuel pressure to verify its operation
fuel smell is a telltale but if your running rich it may be hard to distinguish excessive fuel smell from inside of the intake to the line, most failed fuel regulators ive seen usualy drip fuel from the vacuum line when you unplug it- or are noticeably wet.
im with everyone else though- it seems to me like an injector issue. if you can seal off the pressure and return lines with pressure in them- pinch off rubber lines or install shutoffs- you can verify an injector leak
by the way the correct way to test a fuel pressure regulator is to first unhook the engine vacume and hook up a hand operated vacume pump with gauge- pump it up to 20" of vacuum and make sure the pressure doesn't bleed off- if it is its a ruptured diaphragm. Then start the engine and release the vacuum and pump it back up while checking the fuel pressure to verify its operation
fuel smell is a telltale but if your running rich it may be hard to distinguish excessive fuel smell from inside of the intake to the line, most failed fuel regulators ive seen usualy drip fuel from the vacuum line when you unplug it- or are noticeably wet.
im with everyone else though- it seems to me like an injector issue. if you can seal off the pressure and return lines with pressure in them- pinch off rubber lines or install shutoffs- you can verify an injector leak
BoostedSUV
Active member
Re: Gas in the oil
Nolan stopped tuning and is almost impossible to get a response from (last I tried). I have everyhing to go code59 I'm just not educated enough in tuning yet to start doing my own tunes.
totally agree. In the past I've vac tested the regualtor with a hand pump and it held 20hg no problem. I will try that again tonight.
also I have -6 braided line from the tank to the rails so pinching off a line would be a problem. That is something I wanted to do though to isolate the bleed off in pressure..
I'm thinking the fact that the truck was tuned 18hg at idle and now idles around 10hg that it's just entirely too fat at idle. This thought just came to me as it's been a few years since it was tuned.
Nolan stopped tuning and is almost impossible to get a response from (last I tried). I have everyhing to go code59 I'm just not educated enough in tuning yet to start doing my own tunes.
totally agree. In the past I've vac tested the regualtor with a hand pump and it held 20hg no problem. I will try that again tonight.
also I have -6 braided line from the tank to the rails so pinching off a line would be a problem. That is something I wanted to do though to isolate the bleed off in pressure..
I'm thinking the fact that the truck was tuned 18hg at idle and now idles around 10hg that it's just entirely too fat at idle. This thought just came to me as it's been a few years since it was tuned.
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Quickstop [UK]
Combating adversyty.
Re: Gas in the oil
What is the AFR at idle? If you need to lean it out in Code59, just go into the F28 table at idle when the truck is warm and that will set it for you.
What is the AFR at idle? If you need to lean it out in Code59, just go into the F28 table at idle when the truck is warm and that will set it for you.
BoostedSUV
Active member
Re: Gas in the oil
11-11.5 cold and its 13.5-14.5 once warmed up. I can hear it idle like crap and not want to stay running when it's started stone cold but will warm up and level off. It also idles under 800rpm cold.
Is there a cell for a cold starting with code 58 that I can adjust in the tune? I looked a while ago but I'm not real knowledgable in the tune dept. I seriously think my issue is in the cold start running pig rich over anything mechanical. Just my thoughts. I'm still running code 58. (I have everything to make the change just haven't yet)
11-11.5 cold and its 13.5-14.5 once warmed up. I can hear it idle like crap and not want to stay running when it's started stone cold but will warm up and level off. It also idles under 800rpm cold.
Is there a cell for a cold starting with code 58 that I can adjust in the tune? I looked a while ago but I'm not real knowledgable in the tune dept. I seriously think my issue is in the cold start running pig rich over anything mechanical. Just my thoughts. I'm still running code 58. (I have everything to make the change just haven't yet)
RealFastV6
@jb_and_his_coffee
Re: Gas in the oil
If the tune is in question, just order a TurboTweak chip and be done with it?
If the tune is in question, just order a TurboTweak chip and be done with it?
RealFastV6
@jb_and_his_coffee
Re: Gas in the oil
PS. You're getting hung up on the fact that you've got more or less vac at idle and therefore you've got more or less fuel pressure at idle. That's meaningless for a variety of reasons. Forget about it.
I know this is all nonsense because it's not in the SyTy supplement, but first of all there's plenty of resolution in the VE tables for the ECU to know that when you're at X hg you need X fuel and at Y hg you need Y fuel. Second of all, the reason the regulator rises and falls in the first place is because of the pressure in the intake manifold. It's the delta between the manifold pressure and the fuel pressure that determines how much fuel is applied not the fuel pressure alone.
The function of the fuel pressure regulator is to make sure this delta is the same throughout vac \ boost, not to increase fueling for boost or different vac levels.
PS. You're getting hung up on the fact that you've got more or less vac at idle and therefore you've got more or less fuel pressure at idle. That's meaningless for a variety of reasons. Forget about it.
I know this is all nonsense because it's not in the SyTy supplement, but first of all there's plenty of resolution in the VE tables for the ECU to know that when you're at X hg you need X fuel and at Y hg you need Y fuel. Second of all, the reason the regulator rises and falls in the first place is because of the pressure in the intake manifold. It's the delta between the manifold pressure and the fuel pressure that determines how much fuel is applied not the fuel pressure alone.
The function of the fuel pressure regulator is to make sure this delta is the same throughout vac \ boost, not to increase fueling for boost or different vac levels.
Quickstop [UK]
Combating adversyty.
Re: Gas in the oil
What temp does the truck think it is at? A bad coolant sensor happened to me and made it rich as hell. In DM, what temp do you see? Ignore the console gauge obviously.
What temp does the truck think it is at? A bad coolant sensor happened to me and made it rich as hell. In DM, what temp do you see? Ignore the console gauge obviously.
BoostedSUV
Active member
Re: Gas in the oil
Temp reads what it should on DM. I have checked that a bunch of times as a lot of my issues could be attributed to a bad sensor.
Honestly since I I tasked the wbo2 I haven't paid much mind to the o2 readings. I will take a look
I didnt yet but it's on the list of things to try.
Temp reads what it should on DM. I have checked that a bunch of times as a lot of my issues could be attributed to a bad sensor.
Honestly since I I tasked the wbo2 I haven't paid much mind to the o2 readings. I will take a look
I didnt yet but it's on the list of things to try.
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