Hi 1994 blazer s10 when starting the first 10 minutes it runs like a misfire i installed new plugs new cap new rotor new wires new gas filter checked timing this truck sat in garage for two years i drained gas tank installed new gas and injecter cleaner it was stalling now its not but no check engine light on it runs like a mis i took it out after ten minutes runs great any idea ? god bless rick
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Re: engine runs terrible
You need to drive the truck. Get it good and warmed up, drive it like ya stole it, and feed some premium to her to break up the varnish in the injectors. Replace the fuel filter again in about 1000 miles and you should be ok.
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Give it a shot of starter fluid: See if it starts up on that, if not, go out, take off the battery wires, sand the terminals to shiny. Pull a spark plug and check for spark (But don't hold it WHILE checking, that hurts.) I'm guessing the fuel pump has cut out, or the ground wasn't quite there.
Ignition module sits in the ignition distributor, remove distributor cap, there will be two elec. harness plugs, the one with two wire's is for the pick up coil, the other one is for the ignition module, just unscrew module out of distributor and install new one.
Anytime a car wont start its missing one of the key things it needs to start. Air, Fuel, spark or compression. The first thing to check is to pull a wire off the spark plug and put a screw drive in the end of the wire. Lay the screw driver on the engine near metal. Crank it and look for a large blue spark it should make a nice popping noise.
If no spark try the same thing with the coil wire. If spark its the cap or rotor. No spark its the coil or module.
If the plugs have spark, try pouring a small amount of gas in the throttle body and see if that starts it. If it does, fuel problem check filter and pump.
If it wont start with either or gas in the throttle body and the plugs have spark then it is either a timing or compression issue. Remove the plug wire from the center of the distrib cap and then remove the cap making sure no wires come off. Have someone crank the engine and see if the rotor spins. If it does not you need to replace the timing chain/belt. If it does spin rent a compression checker and check each cylinder.
Any chance you get take that in to get the codes read. That is important and step one of the process. This will tell you the problem. If you are getting spark at the plug then more then likely you are having fuel problems.
well a new fuel filter should be pretty cheap and easy to install. Could always blow an air hose through it the opposite way if you really can't afford a new one (temp fix or test). Make sure to check the cap and rotor and be sure that they are not all corroded. Also check to make sure that the cap and rotor are both using the same kind of metal. Pull off a spark plug wire at the cap and if it's brass then the rotor should also be brass. It will have a much better connection. Check the ground wires coming off the battery. Check the spark plug wires and plugs for shorts. You might not be running on all cylinders. I know that this is a little broad but it should give you something to go on. Let me know how it goes.