SOURCE: 2002 nissan sentra it wont start i got fire on the spark plugs bu
Injector pulse comes from Cam sensor, If you have a BAd CAMSHAFT sensor you will not get injector pulse, replace sensor and that should solve your problem. Good Luck and thanks for using FIX YA
SOURCE: Change spark plugs and now car wont start.....1994 ford tarus
Do you have the "firing order" correct? In other words, is each spark plug wire going to the same cylinder it was on before you changed the plugs? If you have done nothing else but changed the plugs then this is the most likely problem.
If when you try to start the car it backfires through the exhaust or backfires through the intake. Then this " IS" the problem. Good luck.
SOURCE: 1992 acura legend change spark plugs,coil,and new
Check out the induction coil fuse plus wiring if it has got damaged while replacing the plugs, coil, etc, since current is not reaching the plugs to initiate the firing .. sodeep
SOURCE: my 1984 ford f-150 turns over,but wont start,it
There are a few things you can still check to locate the weak spark issue.
The first is the battery. you should have it tested. If it's showing a low voltage this may or may not be because the battery is bad. You need to consider the age of the battery first. & years is about the life of the average auto battery. If it's newer then that the alternator and or the wires could be the cause.
Inspect the battery cables and alternator wiring.
The cables and terminals should be cleaned and a little Vaseline applied to combat corrosion. All the wiring in the starting circuit should be inspected for loose or damaged connectors and corrosion. Also look for any wear or kinks in the wire covering. A thin spot on a wire can bleed off voltage and interrupt the signal. Get a can of Dielectric grease and spray the inside of all the connectors.
You replace most of the ignition components but how about the ignition control module. Although when the control module goes bad the symptom is usually no spark but it can affect the coil's performance resulting in weak spark also. Before replacing the control module disconnect all the terminals and check and clean any corrosion you find. Apply some Dielectric grease spray and reconnect and check your spark.
More then likely following these steps will take care of the problem.
If after you have checked everything here and the problem persists please respond with all you checked and any results and I'll try and help narrow the trouble down.
Hope this helps.
SOURCE: 1998 Pontiac transport van wont start:
Well you hit all the major ones, could be crank position sensor, ignition module, a bad coil pack (it should have 3), you need to check that you have spark to each plug while the engine is turning over (!!!be careful as this will hurt if you get shocked!!!), this will rule out coil packs. if you have no spark to any plug your looking at a bad ingnition module (which is what the coil packs bolt to). Hope this gets you on the right track!
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