testing the ALCL. poor cold start running

[Karl]

New fuel pumps and strainers are in and i'm back on the road. No more bog in second gear either.


:-)

[-=Jeff=-]

That is on my list.. Along with auto down windows

[Karl]

Well my car still runs bad.

It worked fine for two trips. After changing the fuel pumps and strainers I assumed (yeah I know) all was good and did not check the fuel pressure.

Car started right up and no cold start issues. Went downtown and ran a few errands, sat in traffic, and had no problem passing on the expressway.

I let the car sit for a few hours and the symptoms came right back. Maybe they never went away.

New fuel pumps, strainers, and filters.

Here are 4 videos I made.

* Ignition on, no start.
* Ignition off after no start
* Start up
* Shut off

http://feed1.tinypic.com/rss.php?ua=...0gbgs0BA%3D%3D

I am lost. Only thing I can think off is the fuel pressure regulator or maybe the ECM due to this thread with the same similar start up issues.

http://www.zr1.net/forum/showthread....=fuel+pressure

I see no leaks anywhere and all the lines are nice and tight.

Thanks for the help.

[XfireZ51]

MAP sensor hose? Pop off? Has oil?

[Schrade]

Alright - maybe let's do static pressure test, and leakdown time.

Plug in FP guage, turn on key to prime rails. If it's not @ 43+ PSI, turn the key off and on again.

If you don't get it then, GENTLY pinch the fuel return line, and prime the rails again (this will NOT yet rule out the FPR), but will tell a line leak, or leaking injector, or (not likely), a bad pump check valve.

Post back on that...

And cold starts and running like bats from Hades means NOTHING. (and do bats actually 'run'??? maybe they do, to V1, then roll flaps and go for V2?)

[Karl]

Where can I pinch the fuel return line?

Only place I can think of is the return line to the tank in the rear.

Also I will check the map sensor.

[Schrade]

Pinch at the P side line at the back of the motor on top at the passenger side. Follow the rail crossover to determine which is feed and which is return. The one coming from the FPR is return.

Some more snappics here.

Start with a light pinch - you don't want to damage the line.


edit:
Front one is return line. Pinch THAT one.

[Karl]

I am pretty sure I just found the problem and will have it fixed in the morning. Will report in the morning. Thanks again!

[Schrade]

Originally Posted by Karl

I am pretty sure I just found the problem and will have it fixed in the morning. Will report in the morning. Thanks again!

What was it there Karl?

You know what they say about minds that enquire, and the yen for knowledge...

[Dynomite]

Originally Posted by Schrade

What was it there Karl?

You know what they say about minds that enquire, and the yen for knowledge...