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Chevy S10 - GMC S15 and Sonoma Engine and Underhood Problems

423 messages,  Last post on Apr 21, 2013 at 4:04 AM

You are in the Chevrolet S-10 & GMC S15 Sonoma Forum.

What is this discussion about? GMC S-15, GMC Sonoma, Chevrolet S-10, Truck

Messages Page 15 of 43

#136 of 423 Re: 1996 Chevy s10 misfiring [lakeliven] by hoodlatch

Feb 25, 2007 (1:47 pm)

Replying to: lakeliven (Feb 25, 2007 8:33 am)
This is the first time I ever heard of a cylinder misfiring caused the porcelain to go bad. That's a new one for me. One time I got a plug that had faulty porcelain. Also on occasion I have cracked the porcelain installing the plug. Is it possible that the socket isn't properly aligned when tightening and causing the plug to crack? I know some of the plugs on my S-10 are a bare to get to, especially on the driver’s side. What I do now when its time to change out the plugs is remove the front wheels and go in above the A-frame with long extensions on 3/8 in drive. As for the miss on #3 cyl., have you ran a compression check?
Good luck

#137 of 423 Re: 1996 Chevy s10 misfiring [hoodlatch] by lakeliven

Mar 03, 2007 (9:56 am)

Replying to: hoodlatch (Feb 25, 2007 1:47 pm)
The compression has been checked and everything appears to be fine. It's weird because I will be driving down the road, then the service engine light comes on and then there is a big pop sound and that's when I know the porcelain on the spark plug has cracked. I just keep an extra spark plug handy.

#138 of 423 Re: 1996 Chevy s10 misfiring [lakeliven] by jneal

Mar 03, 2007 (4:20 pm)

Replying to: lakeliven (Mar 03, 2007 9:56 am)
When you say "the porcelain is cracked" are you talking about the top part of the plug or the part that is actually inside the cylinder??

#139 of 423 spark plug by lakeliven

Mar 03, 2007 (7:44 pm)

It has cracked once where the porcelain goes into the plug and then again about mid-way down the porcelain.

#140 of 423 Re: spark plug [lakeliven] by jneal

Mar 05, 2007 (8:19 am)

Replying to: lakeliven (Mar 03, 2007 7:44 pm)
As hoodlatch said, some plugs can be a bear to get to....are you sure you aren't cracking them when you install them?
 
I'm still not sure from your answer whether the plug is cracking inside the cylinder or outside. I'm not aware of anything that can be wrong with the engine that would cause the plug to crack on the outside of the cylinder. Inside is a different story...detonation, backfiring etc......several things can crack a plug internally.

#141 of 423 My truck, and a few little problems ans questions. by sickshoesbrah

May 16, 2007 (7:40 pm)

#142 of 423 My truck, and a few little problems ans questions. by sickshoesbrah

May 10, 2007 (7:16 pm)

So Im driving around town about three months ago. Keeping in mind that i was looking for a truck to dink around in and play with. I drive by this '85 S15 4X4 with the 2.8 and i picked it up for a cool 300 from an older gentleman that had bought it new, never drove it in the winter, it has only surface rust. 137k, brand new Hankook tires, 2 year old radiator, 4 year old alternator, new battery, new bed liner and a full tank of gas .
 
What I did to it:
 
Right away i had to fix a bad oil leak, changed the plugs and had to replace the water pump, it was backfiring out of the carb-fixed that, the linkage was all messed up so you had to jam it into park-fixed that, the previous owner had a lifetime warranty on a muffler from 91, so i had him sign that over to me, so that was free to replace. All in all i dropped about $300 into it.
 
My questions are:
 
I have quite a rough idle, im going to replace the distributor cap and plug wires here shortly, any other suggestions to help smooth that out?
 
My drivers side door window keeps braking the clip that holds it from falling forward, i've changed it numerous times, it will work for about a week, then it will just break again... and its pissing me off, what can I do?
 
Basically the only spot that is rusted through is a corner of the drivers floor panel, exsposing the carpet ans such. What can I do to patch that up?
 
As it is about to shift into third gear, it will make a odd sort of over revving noise, but it appears to only do it when it is about to shift into third, any ideas?

#143 of 423 oooook by sickshoesbrah

May 16, 2007 (7:15 pm)

ok..

#144 of 423 Re: My truck, and a few little problems ans questions. [sickshoesbrah] by hoodlatch

May 16, 2007 (7:40 pm)

Replying to: sickshoesbrah (May 10, 2007 7:16 pm)
Sounds like a nice fix it-upper. About the transmission, it might be worth while to check out the vacuume modulator. Sometimes they wear out or the vacuume line gets old and leaks. Its not that difficult to change out even if it is bad. Good luck Brah.

#145 of 423 Need help with these questions asap by sickshoesbrah

Sep 11, 2007 (11:10 pm)

Messages Page 15 of 43

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