95 blazer #2 misfire?

Question

I guess my brother inlaw had changed the wires and and cap..... and I changed the plug this morning but I still got my check engine light to come back on. I also have egr problems????? its not the cat or the egr valve, they have been changed any ideas?

Answer 1

INJECTOR (FUEL). WORSE CASE SCENARIO COULD BE A BAD CAM AND LIFTER.

Answer 2

Most of the time, only two things happen to the EGR valve. One, it develops a vacuum leak and can't open. You've already replaced it, so that's obviously not the problem. Two, the Exhaust Gas Return Valve Position Sensor quit working. This is a common problem with Fords, Chevies, and Dodges (in other words, most American cars) before 2001. Replace the sensor. Are you still having Misfire??? This won't be because of the EGR valve. If you're still having problems after changing the sensor, bring it back (don't tell them you installed it, and try to clean it up) and go have your codes read, so you can figure out exactly what the problem is without any more hit and miss troubleshooting. Email me your codes ($60) and emission report ($25) and I'll tell you what's wrong.

Also, if you're still misfiring, you could have compression problems. Have someone check the compression for you. It should be equal in all chambers. I lost my exhaust valve in my 351 once because it developed a leak and it was sending the combustion straight out of the exhaust before it could even push on the piston.

One more thing: You could also have a broken cam rod.

Answer 3

But you didn't change the rotor button, change it and if problem is still present, you could have a bad injector, or there is a possibility that if you didn't set the gap on the plugs, #2 could be set too far apart... also pull #2 plug and check to see if the plug was cracked on installation...and also pull #2 wire and insert and spare plug in the end of wire and lay wire on top of the valve cover and just bump the engine and if you see spark from the plug, then more than likely its the injector..also recheck the cap for cracks, and make sure wires are seated properly on the cap..

Answer 4

First, don't get nuts with injectors. Start by figuring out exactly what your brother did and if he did it properly. It's poossible he screwed up. Also, make sure that all of your plugs are in all of the way. Then, make sure that none of your wires are touching eachother. Sometimes, in lesser quality wires, the current can "jump" and screw up the wire it's resting on and causes a misfire. You could also check the wires at night...pop the hood and look for any arcs...a sign of a bad wire.

All of this is free to do, so do that first, THEN start letting the internet spend your money.

Answer 5

sounds to me you have a bad injector . i have a 02 suburban and it had a misfire also ,it was just a bad injector . you can take your blazer in to any shop and have a injector service done to it for under $100 dollars, or you can just go buy a single injector, but i realy recomend to have your injectors profesional cleaned. if doesn't fix the problem the mechanic should tell you if you need to replace the #2 injector. with fuel injected vehicles you should have your injectors cleaned every 50-75 thousands miles.

Answer 6

Have you checked for an intake manifold leak,or a distributor shaft problem,dist problems are common the bushings wear out and the shaft wobbles from side to side it can cause a misfire.

Answer 7

On those Blazers, the most elementary reason is gasoline furnish. would nicely be a leaking line, yet maximum in all probability that's the gasoline pump. in case you make certain that's the gasoline pump, make confident the gas tank is almost empty, beforehand replacing the pump ( contained in the tank ).