spark

I can't remember changing the spark plugs in my Jeep, so I decided to knock it out today. The old plugs that came out looked terrible. They are NGK plugs, and I wonder if they are the factory plugs (2005 4.0 with 172k Miles on the odometer). New plugs: AutoLite Double Platinum Spark Plug...

Jeep Drives ok now… but idles and shakes bad when at a stop. Feels like it’s coming from the front. Any thoughts? 150,000 miles REPLACED; Both head gaskets Both cam sensors Reset timing Both oxygen sensors Oil pressure sensor Spark plugs Spark plug coils Oil cooler Fuel injectors...

92 cherokee laredo 4.0 automatic transmission. Was running d Then died. Replaced crankshaft position sensor ignition coil plug wires spark plugs distributor cap and rotor fuel filter fuel pump. Got fuel pressure. Got really good spark off coil very weak spark to plugs. Got 8.70 volts from ecu...

07 wrangler jk 3.8l it all started with a p0301 code, misfire cylinder one so I replaced the spark plug for cylinder one then I got a P0303 code so I replaced all of the spark plugs and all of the spark plug wires. The code then changed to a P0300 misfire in random cylinders. so I replaced the...

Hello, I need some help I needed to change out my old spark plugs and wires yesterday, but after I swapped them out with new parts the engine refuses to turn over. I have quadruple checked the firing order (153624 going CW) and have put in and taken out the plugs and wires twice, even putting...

Hi i am a relatively new owner of a 1983 CJ7 it has had a clean engine swap and currently have a 1992 4.2L in line 6. i recently noticed that the motor transfer case and transmission were all rotated (standing under car looking forward the left side was raised and right side was down). i took a...

Okay i know alot of other people are having the same problem as I am so if anyone can answer this it will be helping alot of people. I have a 2009 3.7L jeep grand cherokee and instead of 1 ignition coil for each spark plug it has 1 ignition coil for 2 spark plugs. The ignition coil has a spark...