Why do i have gas in my oil pan

10

Asked by Apr 04, 2013 at 11:17 PM about the 1991 Chevrolet Camaro Z28

Question type: Maintenance & Repair

I have 1991 Chevy Camaro Z28 8 Cylinder fuel injection, it will not turn over, I checked the injectors, the fuel regulator, airlines.

Any thoughts

9 Answers

145

Gas in the oil pan indicates fuel leaking into the engine. A leaking injector would be a likely cause. If your engine is not turning over at all, you may want to check the battery, starter, wiring, or starter relay. If it's turning over, but just not starting, you may want to check the ignition and fuel delivery. Will it fire with a spray of starting fluid in the intake?

1 of 1 people found this helpful.
10

Hi thanks for your reply, It does turn over but does not start. I will try starting fluid today. we checked the injectors with an OHM meter and they averaged 12, 13, one injector was 11 so we replaced that one. How else can you identify if an injector is leaking/stuck open

1 of 1 people found this helpful.
10

ok we started but now it seems to flood out?

35,245

Check the fuel pressure regulator. Sounds funny but GM used the same regulator from mid 80s- mid 90s, I saw one where the diaphragm ripped and allowed fuel at full pressure to leak directly into the vacuum line that controlled the regulator. Raw gas dumped into the intake while the pump was on and flooded the engine. Really easy to check, just pull the vacuum line off the regulator and see if fuel is pouring out while the engine is cranking

3 of 3 people found this helpful.
Best Answer Mark helpful
35,245

Was that it?

101,365

Good tip John. The Grand Am guys have what's called the suck test. Put a piece of clear aquarium tubing on the fuel pressure regulator nipple and suck on it. Watch the clear tube for gas.

1 of 1 people found this helpful.
10

Yes, thank you for your help..and thanks for the input tenspeed. the regulator was one of the issues, we replaced it and it does not flood any more!!! however, it does turn over, but it does not stay running. It stalls in about 10- 20 seconds. I have now replaced the regulator, replaced the injectors, cleaned the intake and the throttle body, I have new plugs, new wires, new distributor. I tried starting fluid and it does not stay running. I was searching for more answers and i removed the EGR selonoid and tested it. I used to wires and connected it to the battery, the selonoid clicked several times, but it remains open at all times. i checked by blowing through the lines. i assume this means that i need to replace the selonoid.. look forward to your comments. The camaro has been sitting for 5yrs.

35,245

If its been sitting for 5 years you may have a gas tank full of varnish.

you injectors could be leaking fuel in to your combustion chamber and fouling / flooding your plugs. preform an injector leak down test.

Your Answer

Camaro

Looking for a Used Camaro in your area?

CarGurus has 30,592 nationwide Camaro listings starting at $2,495.

ZIP:

Chevrolet Camaro Experts

  • #1
    dandyoun
    Reputation
    1,760
  • #2
    carGrrl
    Reputation
    1,200
  • #3
    Tom Demyan
    Reputation
    1,090
View All

Related Models For Sale

Used Ford Mustang
594 Great Deals out of 36,129 listings starting at $1,800
Used Chevrolet Corvette
185 Great Deals out of 19,805 listings starting at $2,490
Used Ford F-150
2,517 Great Deals out of 193,861 listings starting at $799
Used BMW 3 Series
1,040 Great Deals out of 33,001 listings starting at $999
Used Jeep Wrangler
330 Great Deals out of 17,069 listings starting at $2,999
Used Pontiac Firebird
8 Great Deals out of 875 listings starting at $2,500
Used Honda Accord
1,040 Great Deals out of 56,909 listings starting at $1,099
Used GMC Sierra 1500
1,003 Great Deals out of 66,526 listings starting at $2,495

Used Cars For Sale

2015 Chevrolet Camaro Z28 For Sale
40 listings starting at $41,980
2014 Chevrolet Camaro Z28 For Sale
13 listings starting at $39,974

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.