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SUVs Chevrolet Blazer Chevy Blazer GMC Jimmy Maintenance and Repair
3450 messages, Last post on Dec 05, 2009 at 4:42 PM
You are in the Chevrolet Blazer Forum. Your Hosts are steve_ & tidester
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Replying to: jaba7530 (Oct 01, 2009 2:22 pm)
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Replying to: jimmyhater (Oct 01, 2009 2:52 pm)
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Replying to: jaba7530 (Oct 01, 2009 3:36 pm)
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Replying to: jimmyhater (Oct 01, 2009 7:29 pm)
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Replying to: jaba7530 (Oct 02, 2009 5:14 am) And for P0300: http://www.obd-codes.com/p0300 I would first try troubleshooting according to P0134. If everything looked good, I would troubleshoot according to P0300. The fuel pump grounds to the frame. I heard that sometimes the connection gets corroded and the fuel pump stops working. |
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Our kid at A&M calls last Monday. The '99 Blazer he is driving (95K miles) is making a ticking noise. First question I ask; did you check the oil? "Yeah, but it's really black". That's when the ugly realization hit, that he thought I had changed the oil about 3K ago, and I thought HE had changed the oil. Oil has 10 months and about 8K on it. Not good. Told him to go get the oil changed ASAP. Still ticking. I'm thinking collapsed lifter. Actually, I'm HOPING collapsed lifter. Told him if it's just ticking, add Marvel Mystery Oil to the fuel and park it until he comes home today. He calls on the way home. Still ticking, CES light comes on. Calls later, CES light is now flashing. uh-oh. Gauges all normal, trip computer says fuel economy not so good. "Keep heading home. You'll either make it or you won't but the damage is done". An hour later I am out in the garage and think my neighbor has pulled up with his diesel Dodge. Wrong. It's the kid, and the engine isn't ticking, it's banging pretty good. Crap. Pulled the valve cover off and the #1 intake rocker is sitting at a 45d angle, bent, the push rod is bent and has been banging on the head. This is not looking good. Pull the spark plug, no damage. Okay, good sign. I think it over and come to the decision that I will change the rocker and pushrod, leave the valve alone, (it has some interesting wear pattern where the rocker was catching it, sort of). Change the parts, put it all back together, cross the fingers and turn the key. The little bastard cut loose with one pants-wetting backfire, then idles smooth as glass without a single tick. Drove the car around a bit, never over 3K rpm as I am not pushing my luck, and it runs like a top. No tapping, ticking, or knocking. After driving the beast all weekend without so much as a peep from the valve train, I send him back to school with the admonishment that he shouldn't drive it anywhere he wouldn't want to walk home from. He called last night to tell me it ran great, no noises, and fuel economy right back where it belongs. No SES light, everything status quo. I wouldn't warranty that repair into next week, but I also can't think of anything that can be worse than what was. If this hadn't worked, the top of the engine would have been torn down and the head reworked. On a car this age, I would be doing the work myself or been approaching the point of diminishing returns real quick. But sometimes God just decides you need a break. 
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i have a 1993 gmc jimmy,I have gas in my oil,It will start,but it makes a knocking sound.,does anyone know anything they can tell me...
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Replying to: fdw1 (Oct 14, 2009 8:15 am) Second, it sounds like you have a leaking CPI that could be flooding the cylinder when the engine is not running. There is a regulator and a "spider assembly" involved in the fuel injection system, and the leak could be coming from here. |
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Replying to: fdw1 (Oct 14, 2009 8:15 am) |
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Hi guys I was wondering what kind of injection system my 2000 blazer 4.3 v6 has?It looks like throttle body injection to me.Its definatly not multi port.The reason I'm asking is my blazer which i just did a tune up on runs AWSOME except for when I floor the gas it seems 2 stumble a little and seems to struggle gettin up to rpms.3/4 throttle it RIPS!This truck does not smoke,burn oil or leak any fluids but it does have high mileage! PS:If I start this truck and take off right away it the engine doesnt seem to wanna go .I have to let it warm for 20 seconds or so.What do you guys think?Has anyone else had this problem?Remember this truck runs very very good except when I floor it and even then its not terrible buts its not 100% either.PLEASE HELP!Thank you guy's very much!!!!!!!!!!!!!!!!!!!!!!!!!!
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