but the problems resurfaced again after driving 4000 kms....
now it has vibration on idle, specially on ac on... after driving 50 kms on ac sometimes it give jerks.... fuel average is down, exaust pipe is black as compared before... no water is given out as before...
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
Inspect the plug wire-it may need to be firmly pushed onto the plug's top. Remove the plug and check for any debris accumulated on the firing end, this can be removed with a wire brush. Run the car in a dark area and watch for sparks from the plug wire. This is a 'shorted' plug wire-replace the wire. Pull the plug wire, insert a plug of known working condition and while wearing a heavy glove, hold the plug's body against a good ground and run (or just crank) the engine. If you do not see sparks from the plug; work your way back step by step to the source of the spark's energy. Is the engine fuel injected? Could be a dirty or clogged injector.
try changing spark plugs from no1 cyl to no2 and no 3 to no 4, clean plugs before changing, run engine if plugs 1 & 3 are now wet they are not firing, you have determined by doing this, that plugs are ok, so the fault has got to lie either with plug leads or distributor cap
First make sure the spark plug wires are on the correct plugs. If you have not done it in the last 5 years replace the plug wires. Last if it still does it replace the spark plugs. Somewhere along that path you should find the solution. Good Luck.
definitely...check wires as well....disconnect wires, one at a time with engine running (don't shock yourself) if the cylinder is firing properly the engine will run worse or die when you disconnect it...plug it back in and move on to the others until you find the cylinder that doesn't change how the engine runs, when disconnected...this is the problem cylinder...you can check the plug simply by swapping it to a known good cylinder...same with wire...there are other ways to check them, but i am assuming you have hand tools only to keep this simple....a plug wire can also arc through the wire insulation to ground and cause a miss...this can usually be easily spotted by running engine in the dark and watching for a blue spark around where the plug wires run...it will show up brightly in the dark...hope i have not lost or confused you and i hope this helps