Will fuel in your oil cause low oil pressure?
08-09-2005, 12:00 AM
#1
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Will fuel in your oil cause low oil pressure?
Well, I just finished my rebuild and my injectors are leaking(which I bought from a user on this forum
)@@!!
My oil pressure sits just below the first line at idle which seems very low to me...
...when I change my oil (and injectors) will it have better pressure or not?
Also, in order to see which injector is leaking I put cups under every injector and primed the fuel pump...in the morning im going to check and see which left fuel behind. Will this method work?
Thanks guys!
Also, I figured it was the injectors cause its hard to start after it sits for a while and the oil/dipstick smelled of fuel..
)@@!! My oil pressure sits just below the first line at idle which seems very low to me...
...when I change my oil (and injectors) will it have better pressure or not?
Also, in order to see which injector is leaking I put cups under every injector and primed the fuel pump...in the morning im going to check and see which left fuel behind. Will this method work?
Thanks guys!
Also, I figured it was the injectors cause its hard to start after it sits for a while and the oil/dipstick smelled of fuel..
08-09-2005, 12:11 AM
#2
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Re: Will fuel in your oil cause low oil pressure?
make sure you don't have gas flowing through the vaccum hose on the top of the pressure regulator. not sure on which way is the best to test it, but yes, fuel in the oil will thin it out badly and should create lower oil pressure
08-09-2005, 12:16 AM
#3
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Re: Will fuel in your oil cause low oil pressure?
youre telling me the regulator can be leaking fuel into the intake?
edit: I just went to pull the vacuum line off of the intake manifold from the regulator and it broke. Looks bone dry... Anyone have a part#?
edit: I just went to pull the vacuum line off of the intake manifold from the regulator and it broke. Looks bone dry... Anyone have a part#?
Last edited by Black1995Z; 08-09-2005 at 12:32 AM.
08-09-2005, 12:39 AM
#4
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Re: Will fuel in your oil cause low oil pressure?
no part number needed. any vaccum hose will fit. doesn't even have to have 90 degree ends to attach to. couple bucks and you're set. but yes, fuel can leak into the intake through the vaccum line if there is something wrong with the diaphram
08-09-2005, 08:22 AM
#6
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Re: Will fuel in your oil cause low oil pressure?
Originally Posted by Black1995Z
youre telling me the regulator can be leaking fuel into the intake?
edit: I just went to pull the vacuum line off of the intake manifold from the regulator and it broke. Looks bone dry... Anyone have a part#?
edit: I just went to pull the vacuum line off of the intake manifold from the regulator and it broke. Looks bone dry... Anyone have a part#?
08-09-2005, 08:54 AM
#7
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Re: Will fuel in your oil cause low oil pressure?
Originally Posted by Black1995Z
If its not the injectors or the regulator how else can fuel get into my oil?
. I haven't driven my car in weeks now because of this same thing, because I changed my injectors and checked the FPR line, and so far doesn't seem either of them are the case, did a fuel pressure test and everything. Still have fuel in the oil, so its been sitting and sitting until I figure this out.
08-09-2005, 12:35 PM
#8
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Re: Will fuel in your oil cause low oil pressure?
Well my testing method came up inconclusive. I'll try a fuel pressure gauge. I'm currently looking at the fuel soleniod from my NX kit to see if its leaking.
Last week I broke my shradder valve and I have to buy a new rail from a junk yard. Ever since then it makes a slightly different noise when I prime the fuel pump. I cant tell where its coming from. Any ideas?
The regulator isnt leaking...
Last week I broke my shradder valve and I have to buy a new rail from a junk yard. Ever since then it makes a slightly different noise when I prime the fuel pump. I cant tell where its coming from. Any ideas?
The regulator isnt leaking...
08-11-2005, 12:30 PM
#9
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Re: Will fuel in your oil cause low oil pressure?
Originally Posted by Feenix
I've been having this question lately myself, and if you figure it out, please keep us updated . I haven't driven my car in weeks now because of this same thing, because I changed my injectors and checked the FPR line, and so far doesn't seem either of them are the case, did a fuel pressure test and everything. Still have fuel in the oil, so its been sitting and sitting until I figure this out.
. I haven't driven my car in weeks now because of this same thing, because I changed my injectors and checked the FPR line, and so far doesn't seem either of them are the case, did a fuel pressure test and everything. Still have fuel in the oil, so its been sitting and sitting until I figure this out.I pulled my rail off complete with the fuel pressure regulator, injectors, and n2o fuel solenoid.. none have a noticable leak overnight. What can it be!!
Did you get your problem fixed?
08-11-2005, 12:39 PM
#10
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Re: Will fuel in your oil cause low oil pressure?
Well I would recheck your oil, does it smell like gas?? Is it thinned out? If thats the case then gas is getting in the oil and it should effect oil pressure.
If your injectors leak, i bet there Accels..... at least thats the one most noted to leak.
If your injectors leak, i bet there Accels..... at least thats the one most noted to leak.
08-11-2005, 01:53 PM
#11
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Re: Will fuel in your oil cause low oil pressure?
maybe your fuel pump isn`t holding the pressure, causing the hard start after sitting, mine was doing that awhile back.
also, if the cars running in limp mode it will run rich aswell, any codes or anything?
also, if the cars running in limp mode it will run rich aswell, any codes or anything?
08-11-2005, 02:03 PM
#12
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Re: Will fuel in your oil cause low oil pressure?
How does the engine run once u get it started? If its a brand new rebuild its possible the rings havent seated yet and fuel is leaking past them. My friend had this happen, only he had a bad miss-fire so a bunch of gas was getting into his oil and he spun all 8 rod bearings in about 50 miles on his new rebuild.
08-11-2005, 02:26 PM
#13
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Re: Will fuel in your oil cause low oil pressure?
Well, first off.. its a used shortblock.
It has a misfire problem, big time. But idles great when it starts
Its hard to start after it sits for a while (1 hour+). But starts up perfectly just afterwords.
Noticed oil pressure just under the last line... seeminly dangerous for a rebuild with a new oil pump. Pulled the dipstick and definitely smells of fuel. No SES lights though.. strangely
Get this though, when I prime the pump it makes a wierd noise in the fuel rail. Its like a squirt noise... or maybe a sucking noise. It didnt do that before. 150k on the original fuel pump.
I'm desperate so any advice/tips are welcome..
It has a misfire problem, big time. But idles great when it starts
Its hard to start after it sits for a while (1 hour+). But starts up perfectly just afterwords.
Noticed oil pressure just under the last line... seeminly dangerous for a rebuild with a new oil pump. Pulled the dipstick and definitely smells of fuel. No SES lights though.. strangely
Get this though, when I prime the pump it makes a wierd noise in the fuel rail. Its like a squirt noise... or maybe a sucking noise. It didnt do that before. 150k on the original fuel pump.
I'm desperate so any advice/tips are welcome..
08-12-2005, 07:33 AM
#14
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Re: Will fuel in your oil cause low oil pressure?
W/ me I have no real noticeable reason for this to be happening other than recently I have been getting a lil bit of a misfire. Before though it was smooth idle smooth acceleration, brand new SVO injectors, but still a hard start and fuel in the crankcase...... Car has 78k miles
Car has 78k miles