Hard Starting and Ideals Rough - Page 2

Gabe25 · #16 09-14-2005, 12:51 PM

This is day 2 of this trouble. Yes, I did check the oil and coolant. Everything looks good. I just got up so, I'll start working on the compression test.

Gabe25 · #17 09-14-2005, 12:55 PM

BlazerLT, I did pull the ERG Valve and check for carbon chuncks. I found that everything looked good. There was no build up, just normal were. Thanks BlazerLT for jumping in to help.

BlazerLT · #18 09-14-2005, 01:22 PM

First off check all vacuum lines.

Replace PCV valve if never done.

Did you replace the upper plenum gasket when you replace the cpi injector?

Also, remove the upper plenum again and look for gas pooling.

Gabe25 · #19 09-14-2005, 02:57 PM

Vacuun lines all checked. Pulled Plenum. No gas leaks. Installed new gasket set. Used 2 cans carb cleaner looking for vacuum leaks. None. PCV Valve was replaced.

BlazerLT · #20 09-14-2005, 03:01 PM

bad gound or your coil or ignition module is faulty.

Did you remove the timing wire when you timed the engine?

Gabe25 · #21 09-14-2005, 05:59 PM

BlazerLT, Yes I disconnected the timing wire going to the PCM. I ran a complete Grd. check and everything looks good. I did a compression test and all the cyclinders are reading between 63-64 PSI. Do you have any other suggestions. I think my brian is getting cooked..

Gabe25 · #22 09-14-2005, 06:39 PM

OK, Like I said earlier. The Engine runs fine at higher RPM's 1500 and up. Only dusring ideal. When I rave the motor and the RPM comes down to 675-700 RPM. The engine ideals good for about 10 sec. Then she starts to surg. I was wondering if it could be the fule injector giving to much fuel. Whats your thought's.

BlazerLT · #23 09-14-2005, 09:08 PM

The alternator could be not putting out enough current at lower rpms.

Gabe25 · #24 09-14-2005, 11:15 PM

I have a brand new gelcel battery & my ideal volts are 13.5 volts

Gabe25 · #25 09-14-2005, 11:25 PM

Correction on the voltage. Its 14.5 charging.

BlazerLT · #26 09-14-2005, 11:33 PM

well, other than that, you should be tesing fuel pressure when this happens

Gabe25 · #27 09-15-2005, 04:14 PM

BlazerLT, I'll recheck my fuel pressure. Do you think that there is a possiblity that my injectors could be faulty. I replaced the injectors back in February and the fuel pump and filter was replaced last month. Whats your thoughts.

BlazerLT · #28 09-15-2005, 04:36 PM

What year truck do you have?

Gabe25 · #29 09-15-2005, 07:11 PM

I have a 1994, 4 dr. S-10 Tahoe. 4.3 "W" Vortec.

BlazerLT · #30 09-15-2005, 08:50 PM

You sure you checked the EGR valve?

Where is it located just to make sure you aren't mistaking it?

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