HELP needed, ignition problem - Ferrari Life
 
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post #1 of 17 Old 08-31-2010, 10:13 AM Thread Starter
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HELP needed, ignition problem

Cylider 2 has no ignition.
This is a strange problem, there is only no ignition when the spark plug is in the engine (checked with pick up sensor and stroboscope lamp).
When i put a spark plug on the ignition cable outside the engine the ignition is ok.
Already chenged spark plug, spark plug leads, ignition coil.
But still the same problem.
Can somebody help me here?

Johan
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post #2 of 17 Old 09-01-2010, 07:41 AM Thread Starter
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Could this be a problem with the injector that keeps spraying fuel on the spark plug?

If these are easy to remove i can change them from place and see if it switches to another cylinder.
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post #3 of 17 Old 09-04-2010, 11:25 AM Thread Starter
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Replaced the injectors with new ones still the same problem.

I don't know it anymore, the only solution will be bringing the car to a dealer i guess.

Johan
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post #4 of 17 Old 09-04-2010, 12:14 PM
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Johan a bit left field
Do a compression check on the motor
Take all the plugs out and make sure the throtles are open.
Preferably use a compression meter that screws into the plug hole

If the coil is working and the plug has spark out the motor then it is unlikely to be an electronic problem and more mechanical?

Last edited by a1exander; 09-04-2010 at 01:03 PM.
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post #5 of 17 Old 09-05-2010, 04:45 AM
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Swap the ignition wire with another one to see if the problem moves to another cylinder. If it does, you have a bad boot grounding in the cover. Thats the only thing that makes sense right now.

Lane

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post #6 of 17 Old 09-05-2010, 08:22 AM
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First check to see how far a gap the spark will jump compared to other cylinders. Modern ignitions should jump at least a 1/4 inch gap. There is a cheap tool you can buy to do this or you can stick a phillips head screwdriver in the end of the wire. Hold the shaft of the screwdriver near some grounded metal and pull it further away till the spark no longer jumps the gap.

If you have a weak spark it will easily jump the gap of a spark plug but under compression the spark will try to find an easier path to ground or not do anything in the case of a weak coil. I don't know if your car has mulitiple coils?

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post #7 of 17 Old 09-05-2010, 08:24 AM
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http://www.ecrater.com/p/3274031/adj...ap-tester-1720

This one allows you to adjust the distance between the two contacts and measure how far of a gap the spark will jump without getting a shock that will shake your dick loose.
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post #8 of 17 Old 09-05-2010, 02:43 PM
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Quote:
Originally Posted by KKRace View Post
I don't know if your car has mulitiple coils?
Assuming its a standard 348, 2 coils...1-4 and 5-8 mounted on the L/R shock riser.

Lane

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post #9 of 17 Old 09-06-2010, 02:00 AM Thread Starter
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I am going to check the compression today or tommorrow.
i am not 100% sure, but i looks like the problem went from cylinder 2 to cylinder 1
This is a very strange problem. i already did a reset of the ECU.
Everything started after i replaced the spark plugs to NGK irridium, and switched to K&N air filter. I also put in new Magnecor competition spark plug leads. I already tried to put in the previous spark plugs, cables and air filter, replaced the coil but nothing helps.
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post #10 of 17 Old 09-06-2010, 12:08 PM
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As you say it is strange but how did you determine that No1 has an issue now and does that mean that No2 is ok now?
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post #11 of 17 Old 09-07-2010, 02:22 AM Thread Starter
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Quote:
Originally Posted by a1exander View Post
As you say it is strange but how did you determine that No1 has an issue now and does that mean that No2 is ok now?
As far as my measurement is correct the problem on N2 is gone and is now on Nr1. I measured this on the spark plug leads just after the coil with a automotive multimeter in combination with a small pick up current clamp.
I also checked the the exhaust manifolds with an infrared camera and you cas see a big temprature difference betwwen the left and right cylinder bank.
The good one goes fast to +/-350C afer start and the bad one goes to +/- 250C.
I am going to measure the compression this evening to be sure.
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post #12 of 17 Old 09-07-2010, 04:46 AM
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This is like stabbing in the dark.
Could it possibly be a transistor problem on the ignition coil?
Then it also sounds daft that it would migrate from cyl2 to cyl1.
Have you checked the multiplug/connector to the coil and sprayed it with some wd10 or similar electrical connection lubricant?
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post #13 of 17 Old 09-07-2010, 05:10 AM Thread Starter
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Quote:
Originally Posted by a1exander View Post
Have you checked the multiplug/connector to the coil and sprayed it with some wd10 or similar electrical connection lubricant?
I dindn't do this yet, first thing to do after work today.
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post #14 of 17 Old 09-11-2010, 11:03 AM
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Any news as yet have you traced the problem?
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post #15 of 17 Old 09-11-2010, 11:13 AM Thread Starter
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Still didn't find the problem, i am going to get it to a dealer next week to find out the problem. i hope its not to much $$$

johan
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post #16 of 17 Old 09-13-2010, 09:53 AM Thread Starter
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Problem solved, something very stupid, spark plug cable 1 and 2 where switched.

johan
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post #17 of 17 Old 09-13-2010, 12:00 PM
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Look at it this way..........the relief of not having to spend a lot of money more then makes up for the silly mistake.
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