Leaking injector - cold start or one of the 8?
03-07-2012, 10:09 PM
#1
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Thread Starter
Leaking injector - cold start or one of the 8?
1984 16V 5pd (US) daily driver.
My car has the common hot start issue. Cold start is excellent, fires up immediately. Hot start is fine as long as it is restarted within 10 or 15 minutes. Hot start after 15 minutes is crank.......sputter.......engine runs. Let the car sit overnight and it starts up fine. This problem has been on the back burner for over a year as my $$ was funding other more critical 928 repairs.
Tests/repairs done so far:
-Temp II Sensor is less than 6 months old.
-all 8 fuel injectors serviced last year
-No visible traces of fuel in the damper or regulator vacuum hoses.
-Check valve is unlikely; jumpering the fuel pump for 30 seconds prior to attempting a hot start makes no difference.
-with the air filter and cover removed, I can smell fuel from the intake a few minutes after shutting the engine off.
SO my question is, is it more likely that one or more of the 8 fuel injectors is leaking, or is a faulty cold start injector a possibility?
My car has the common hot start issue. Cold start is excellent, fires up immediately. Hot start is fine as long as it is restarted within 10 or 15 minutes. Hot start after 15 minutes is crank.......sputter.......engine runs. Let the car sit overnight and it starts up fine. This problem has been on the back burner for over a year as my $$ was funding other more critical 928 repairs.
Tests/repairs done so far:
-Temp II Sensor is less than 6 months old.
-all 8 fuel injectors serviced last year
-No visible traces of fuel in the damper or regulator vacuum hoses.
-Check valve is unlikely; jumpering the fuel pump for 30 seconds prior to attempting a hot start makes no difference.
-with the air filter and cover removed, I can smell fuel from the intake a few minutes after shutting the engine off.
SO my question is, is it more likely that one or more of the 8 fuel injectors is leaking, or is a faulty cold start injector a possibility?
Last edited by Opelotus; 03-07-2012 at 10:10 PM. Reason: left out key info
