Recent content by mark'stb

It's starting to look like I may need to go with LT headlights and grille.

Looking for a trailblazer SS grille p/n 15134119. Thanks.

Almost 2 weeks and it's running good. Still have almost 2 gallons of the alcohol left and I'm adding a splash with each fill up.

Today's update. The 99% arrived. $68 for 4 gallons. I poured a gallon into the tank and let it sit a few hours. Bounced the truck a few times to agitate it. Pumped it out and was clear and had a very slight goldish tint. Repeated this with the second gallon and it was clearer than the first...

Today's update. Pumped out the fuel and ordered 4 gallons of 99% isopropyl alcohol. My plan is to add 1 gallon and let it sit a few hours then pump it out. Repeat with gallon #2. Add fresh fuel and another gallon. Save the last gallon. Does this sound reasonable?

Budwhich, that's what I thought and removed the rail an blew out the rail and replaced the injectors. Still acting like fuel quality as the picture I posted clearly shows. For the hell of it, I marked the levels of the gas on the glass and added some 70% isopropyl alcohol. I looks like it...

old school, very old school, mechanic said to add 99% isopropyl alcohol to the tank to disperse the water.

Well, made some progress today, Actually a very little bit of progress. Re did compression test, and leak test. The results were similar to the first time. Compression ok, cylinder leakage is high at 30-60%. Did an injector balance test, all 6 within 2 psi of each other. Ran a can of intake...

I was going by this TSB. Tomorrow's job is to do an injector balance test and verify that the injectors are getting power and ground

I'm starting to lean towards carbon build up on the back of the intake valves. I don't think I have any sticking valves since there is no valvetrain noise. This engine has had nothing but Mobil 1 oil since the first oil change at 300 miles. The intake ports on the manifold and head have what I...

6 new GM injectors installed last Saturday.

MRRSM, I did install a GM fuel pump installed approx 11,000 miles ago. I've never used a scope to diagnose a problem. Maybe now is the time to buy one and learn how to use it. Any thought of this being a pcm issue with bad injector drivers?

ok, here's where I am at. keep in mind 271,000+ mile engine. Compression test, all cylinders, 190- 215. 190 being #1. Leak test, 30-65%, 65 is number 1. Tech 2 is showing misfire on 5 and 6. A lot but not really for the mileage. Cyl 5 and 6 are at 35% each. Hear air from the oil fill cap so I am...

no oil in coolant, no coolant in oil, and no white smoke from the tailpipe. I pulled the plugs and they look crappy even though they don't have more than 5 minutes run time on them. I'll see if I can borrow a compression tester tomorrow. Cylinder leak tester I have, but it's at work. Could a bad...

Swapped # 5 & 6 coils with #2 & 3. Still missing on 5 and 6. I used GM coils and injectors. All good suggestions. Keep in mind, it ran fine going to work, added questionable gas, left work, and drove about 1/2 mile. That's when it stalled and would not restart.