Question about 2004 Chevrolet S-10

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Chev 2001 blazer, misfire #6, have changed wires,plugs, dist cap & rotor button, had the code checked & cleared after each change but always get Misfire #6 after hitting 45 mph.No misfire at low speeds or idle.

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Engine is getting enough fuel at low revs,starved when opened up fuel filter suspect,clean out and test

Posted on Jul 09, 2010

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92 s10 blazer,popping through intake when warm and accelerating,runs better when manually shifting.


It could be a few different thing's , testing to find out the problem , rather then just replacing parts is the proper way to fix vehicles . Checking engine sensor data with the proper factory or equivalent scan tool . Could be a vacuum , leaking fuel pressure regulator, map sensor . CPI injection system under the intake manifold . Chev GMC Misfire poppet injector diagnosis troubleshooting and replacement

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Yes, it could be the distributor cap or the ignition rotor. Best to replace both. It could also be dirty or defective fuel injectors.

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could be your coil, but can also be internal, have you replaced both the air & fuel filters ? if so, dump some good fuel injector cleaner into tank when half empty , top off with 91-92 octane fuel, see how that works for you, do some highway driving, stop & go traffic creates problems, todays fuel w/ethonal is bad for older cars, be sure to have code cleared from ecm !

Feb 15, 2013 | 1999 Dodge Ram

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86 S-10 Blazer 4X4 auto trans 2.8 with AC. will not run now. changed fuel pump couple months ago ran fine till now. 34 code changed MAP sensor code cleared. found bad rotor changed rotor, Dist. cap. Plugs,...


Your injectors may be shot ... That might explain the code. As horrible as this is to ask, you seem pretty handy with your tools, do you by chance have a carburetor, perhaps a quadrajet or whatnaught, to hook up just for a second to see if your ECU/fuel injection system is FUBAR'd?

Oct 31, 2010 | 1986 Chevrolet S-10 Blazer

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Code p0300 coming up random cylinder misfire already changed wires had cylinder 5 misfire .should i replace coil


If you already replaced the wires, I would suggest replacing the plugs, distributor cap and rotor. They are also very important parts of the spark. Fuel injector problems can also cause misfires.

May 19, 2010 | 2001 Chevrolet Blazer

1 Answer

Condensation in the Cap on the rotor and in the distributor, 2001 Chev Blazer Xtreme 4.3 v6. I had misfires,and then it stopped running.pulled the cap,and rotor off and found extreme corrosion,burnt tips...


Hi, no there are not any holes in the cap. There is a gasket that runs around the distributor to keep out the moisture. Change it out, this must be dry and you know that. It has to be the gasket as if the cap was cracked it would run very poorly. Check and replace the gasket.
Sincerely,
Shastalaker7

Jan 29, 2010 | 2001 Chevrolet Blazer

1 Answer

1990 K5 Blazer DIED(Electrical?)?


There may be no injector pulse if the computor does not see a RPM signal.
There will be no spark if the ignition module does not see a dist pulse from the dist pickup.......a RPM signal.
Because you do not have both ......I would suggest to check/change the dist pick up.
Follow the wires from the ignition module inside the dist to the pickup which is also inside the dist.
If it is just a bad dist pickup....keep all your old parts as good spares.
Also...is the dist turning? to provide a RPM signal?
You will have to remove the dist to change the pick-up.....mark your timing locations......"rotor position" and "dist body location"before removal.
A quick test before installing the "repaired dist" .....plug it in the the truck wiring and turn on the key....DO NOT CRANK THE ENGINE OR YOU WILL LOSE YOUR DIST ROTOR CORRECT POSITION......as you spin the dist by hand .....the injectors should spray.

Aug 23, 2009 | 1989 Chevrolet S-10 Blazer

1 Answer

Misfire of the #3 cylinder, 4.3 6 cyl


R THEY WIRED CORRECTLY,WITH THE SAME GAP??

Aug 17, 2009 | 1999 Chevrolet S-10 Pickup

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