runs rough smell gas in oil
03-14-2018, 09:08 PM
#1
Navigator
Thread Starter
runs rough smell gas in oil
1989 C4 checked Oil and it Smells like Gas I replaced Injectors all 8 mass air flow sensor spark plugs wires. distributor cap now i am at a loss can any one help me the car has only 52.887 miles HELP somebody????
03-14-2018, 09:22 PM
#2
Melting Slicks
Have you taken a look at the fuel pressure regulator ? because if your fuel pressure regulator goes bad it may be able suck gas into your crank thru the Vac. hose.
Last edited by s carter; 03-14-2018 at 10:21 PM.
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Incorvettei (12-26-2023)
03-15-2018, 05:11 AM
#3
Drifting
03-15-2018, 11:22 AM
#4
Navigator
Thread Starter
03-15-2018, 05:24 PM
#5
Melting Slicks
This one was only 4 years old when it suddenly went bad.
You can check for a leaking diaphragm by pulling the vacuum hose after you just turn it off and if any fuel at all comes out ... it's bad. To change it you either pull the plenum to get to it or you can do it the hard way using a torx-10 security bit and a 1/4 in wrench. Looks impossible but it's doable.
03-16-2018, 02:20 PM
#6
Team Owner
I'd dump the oil before going anywhere. After which I'd do a fuel pressure check to see if the system holds pressure before tearing things down. After which, check compression.
04-15-2018, 05:41 AM
#8
Drifting
11-07-2023, 08:41 PM
#9
Navigator
Thread Starter
starting over
Sorry I' just now getting back with you but i replaced the injectors and it did run good now I replaced the fuel pressure regulator the fuel pump and the in line fuel filter and now it runs rough and dies out again kan you give some advise
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kenmohr (12-23-2023)
