Still got poor idle and misfire

rodmel · 04-03-2008, 19:38

I have a 97 1.3mpi felicia I posted a thread about a month ago. Tryed the suggestion posted no better. Took the car to skoda trained mech who had it for four hours. Every possable check done took parts off a running and swapped no better.He stopped then and his suggestion was that it might be the crankwheel timing mark moving ie the flywheel cracked. Luckly he did`t charge me and did`nt go any further because his time to check this would cost more then the car worth. Any suggestions welcome

daverapid · 04-03-2008, 20:46

I would check the inlet manifold for air leaks, especially the gasket. Spray WD40 or carb cleaner round it while the engine is idling which will find any leak and temporarily make it run better by sealing the leak.

youngsyd · 04-03-2008, 21:09

Tried Hall sensor?

rodmel · 07-03-2008, 14:37

hi again tryed crank sensor no better and tryed carb cleaner i`m at really lost as what to do next . I know the car won`t pass a mot and think i might have to scrap it pity its only done 52000 miles with service history up tp 40000

cliver · 09-03-2008, 12:16

check vacuum pipes, different plugs for for 54bhp than 68bhp .Compression test? coil pack failing ? look at threads for cleaning throttle body

harryhill · 09-03-2008, 17:03

Quote:

Originally Posted by daverapid

I would check the inlet manifold for air leaks, especially the gasket. Spray WD40 or carb cleaner round it while the engine is idling which will find any leak and temporarily make it run better by sealing the leak.

I agree with this, but to be honest WD40 doesnt always show this fault up. Mine didn't but after spending peanuts on two gaskets it made the world of difference.

This is a totally swear free satisfying job as well. Just set aside a couple of hours as it isn't hard. The original gaskets fitted to the Felicia are not substaintial enough and have been notably upgraded as it is a know problem.

tbone1664 · 15-03-2008, 07:45

Make sure you check the condition of the springs that connect the tip off the plucgs into the coil pack.

fordfan · 15-03-2008, 08:49

Blocked no. 4 fuel injector, the one at the end of the fuel rail. There is a fine mesh filter on top, I have seen these blocked in the past causing a mis-fire. Remove the injector and wash/blow the filter out.

rodmel · 12-04-2008, 07:27

hi again at last got it sorted it was the coil pack.Now runs fine and better mpg.

04-03-2008, 19:38	#1
rodmel Briskodian Join Date: Jan 2008 Posts: 8 Thanks: 1 Thanked 0 Times in 0 Posts	Still got poor idle and misfire I have a 97 1.3mpi felicia I posted a thread about a month ago. Tryed the suggestion posted no better. Took the car to skoda trained mech who had it for four hours. Every possable check done took parts off a running and swapped no better.He stopped then and his suggestion was that it might be the crankwheel timing mark moving ie the flywheel cracked. Luckly he did`t charge me and did`nt go any further because his time to check this would cost more then the car worth. Any suggestions welcome

04-03-2008, 20:46	#2
daverapid Briskodian Join Date: Dec 2005 Location: Sawston, Cambridgeshire Posts: 760 Thanks: 19 Thanked 81 Times in 74 Posts	Re: Still got poor idle and misfire I would check the inlet manifold for air leaks, especially the gasket. Spray WD40 or carb cleaner round it while the engine is idling which will find any leak and temporarily make it run better by sealing the leak. __________________ David McKinney TREASURER OF SKODA OWNERS CLUB GREAT BRITAIN www.skoda-owners-club.org.uk

04-03-2008, 21:09	#3
youngsyd is hating life! Join Date: Aug 2007 Location: Dont Know, Dont Care Posts: 2,132 Thanks: 67 Thanked 93 Times in 90 Posts	Re: Still got poor idle and misfire Tried Hall sensor? __________________ Id rather be a nobody than an overated someone...

07-03-2008, 14:37	#4
rodmel Briskodian Join Date: Jan 2008 Posts: 8 Thanks: 1 Thanked 0 Times in 0 Posts	Re: Still got poor idle and misfire hi again tryed crank sensor no better and tryed carb cleaner i`m at really lost as what to do next . I know the car won`t pass a mot and think i might have to scrap it pity its only done 52000 miles with service history up tp 40000

09-03-2008, 12:16	#5
cliver Briskodian Join Date: Mar 2007 Posts: 18 Thanks: 8 Thanked 2 Times in 2 Posts	Re: Still got poor idle and misfire check vacuum pipes, different plugs for for 54bhp than 68bhp .Compression test? coil pack failing ? look at threads for cleaning throttle body Last edited by cliver; 12-03-2008 at 15:40.

15-03-2008, 07:45	#7
tbone1664 Briskodian Join Date: Mar 2008 Posts: 1 Thanks: 0 Thanked 0 Times in 0 Posts	Re: Still got poor idle and misfire Make sure you check the condition of the springs that connect the tip off the plucgs into the coil pack.

15-03-2008, 08:49	#8
fordfan ECUless Join Date: Mar 2005 Posts: 1,823 Thanks: 28 Thanked 202 Times in 176 Posts	Re: Still got poor idle and misfire Blocked no. 4 fuel injector, the one at the end of the fuel rail. There is a fine mesh filter on top, I have seen these blocked in the past causing a mis-fire. Remove the injector and wash/blow the filter out.

12-04-2008, 07:27	#9
rodmel Briskodian Join Date: Jan 2008 Posts: 8 Thanks: 1 Thanked 0 Times in 0 Posts	Re: Still got poor idle and misfire hi again at last got it sorted it was the coil pack.Now runs fine and better mpg.

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