tylergrant2011 Posted February 13, 2015 Posted February 13, 2015 1987 commanche losing compression through o rings I think and you can twist 2/6 injectors easy. Runs then shuts off
oldseddie Posted February 13, 2015 Posted February 13, 2015 If you're losing compression it's not the injectors. Rings or valves or hole in piston come to mind.
oldseddie Posted February 13, 2015 Posted February 13, 2015 Google Cruisers mostly renix tips. Someone will post a link shortly I'm sure.
gogmorgo Posted February 13, 2015 Posted February 13, 2015 The fuel in the rail is under pressure, yes. Is it being compressed? Not really, but that's just semantics. If your injector o-rings are leaking enough to cause running problems, there would be a noticeable fuel leak. X2 on Cruiser's Renix Tips.
tylergrant2011 Posted February 13, 2015 Author Posted February 13, 2015 If you can't lose compression through o rings on injector head why does air push out the sides of the rings when the piston is coming up near tdc?
gogmorgo Posted February 13, 2015 Posted February 13, 2015 The injectors are in the intake, not the head. If you're compressing air into the intake, you've got bigger problems than leaking injectors. Bad intake valves/seals, as suggested... Or else you're turning the engine backwards...
tylergrant2011 Posted February 13, 2015 Author Posted February 13, 2015 Its got new valve seals rocker arms valves and pushrods and lifters
cruiser54 Posted February 13, 2015 Posted February 13, 2015 They all twist easily. What is the symptom that you're trying to cure?
tylergrant2011 Posted February 14, 2015 Author Posted February 14, 2015 I'm having a crank no start issue. It tries to start for a second but then dies. I'm getting spark to all plugs and fuel to all cylinders.
A-man930 Posted February 17, 2015 Posted February 17, 2015 +1 for ballast resistor. If that is bad the fuel pump will quit once the key is out of the "crank" position.
Crash Posted February 18, 2015 Posted February 18, 2015 As others have mentioned, this is a common issue with the ballast resistor failing. It is on the driver side inner fender in front of the egr vacuum solenoid. Disco the wires and jumper them together. If necessary, a paper clip will work for this. Then try to start/run it. If it runs, you found your problem. You can permanently bypass this without issue. Or you can buy a new one and hope it doesn't fail.
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now