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no spark from spark plugs

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john_d

Post subject: no spark from spark plugs

Posted: Thu Jul 30, 2009 9:36 pm

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my 2l conversion is'nt starting.

ive checked the sparkplugs and there is no spark!

ive checked the plug on the coilpack nd there is a voltage on both outside pins (12v-ish) with the middle being 1v-ish.

been told it could be the cps or coilpack

anyone know which of these is more likely to be the cause?

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95 Fiesta Si

Post subject: Re: no spark from spark plugs

Posted: Wed Aug 05, 2009 3:36 pm

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it's common for coilpacks to pack up on the Si.

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john_d

Post subject: Re: no spark from spark plugs

Posted: Wed Aug 05, 2009 8:39 pm

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turns out ive got and engine from an automatic, so i'll need a differnet cps holder.

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john_d

Post subject: Re: no spark from spark plugs

Posted: Sun Sep 27, 2009 8:25 am

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fitted the holder and still no further forward (have'nt even looked at it for 3 weeks

ops: )

had a thought though, according to the haynes book of lies, the 2l spark plug gap should be 1.3mm (iirc), is this the gap everyone uses as it seems a pretty big gap!

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john_d

Post subject: Re: no spark from spark plugs

Posted: Sun Sep 27, 2009 8:53 am

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was thinking about buying 1 of these, reckon it'd be any help?

http://www.halfords.com/webapp/wcs/stor ... yId_165469

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happypaul

Post subject: Re: no spark from spark plugs

Posted: Sun Sep 27, 2009 9:32 am

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Id give that a go mate, worth checking

I had 1mm plug gaps, I'm sure ford ended up changing them to 1mm due to the HT leads shitting themselves due to the large gap.

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john_d

Post subject: Re: no spark from spark plugs

Posted: Sun Sep 27, 2009 11:23 am

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am i right in thinking if the gap is too big the spark wont appear?

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happypaul

Post subject: Re: no spark from spark plugs

Posted: Sun Sep 27, 2009 1:18 pm

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john_d

Post subject: Re: no spark from spark plugs

Posted: Sun Sep 27, 2009 1:22 pm

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thanks, i'll gap the plugs to 1mm and see what (if any) difference that makes.

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Fezzyzetec

Post subject: Re: no spark from spark plugs

Posted: Sat Oct 03, 2009 4:07 pm

i would imagine there would be a spark even if the gap is 1.3mm haveyou checked the crank sensor with a multimeter could be an ecu fault or PCM fault also check for breaks in the wiring loom to various sensors especially to the coil pack and crank sensor and make sure all connections are tight

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john_d

Post subject: Re: no spark from spark plugs

Posted: Sat Oct 03, 2009 4:14 pm

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Fezzyzetec

Post subject: Re: no spark from spark plugs

Posted: Mon Oct 12, 2009 10:20 pm

checked the igntion fuse m8 ai blown and the pcm is under the dash power control module dash out job

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john_d

Post subject: Re: no spark from spark plugs

Posted: Tue Oct 13, 2009 6:17 am

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scrapped!

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happypaul

Post subject: Re: no spark from spark plugs

Posted: Tue Oct 13, 2009 6:18 am

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Youve given up on it??

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john_d

Post subject: Re: no spark from spark plugs

Posted: Tue Oct 13, 2009 6:41 am

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aint got a clue whats wrong, changed the coilpack, there's power going to the coilpack but still no spark, the cars been sitting idle for over :hmm:

2 years on my dads driveway.

looked at getting another loom in the off-chance it was the loom but when ppl are offering u theirs for Â£100 :hmm:

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happypaul

Post subject: Re: no spark from spark plugs

Posted: Tue Oct 13, 2009 6:55 am

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Ive got an si car loom for Â£25 lol

No engine bay wiring left tho.

Although yours is a strange problem.

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john_d

Post subject: Re: no spark from spark plugs

Posted: Tue Oct 13, 2009 7:03 am

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its the engine part i was after

the guys on "xrtwo" manage to get it working ok with just the engine loom so i thought i could do it, tbh, i always concidered wiring/electrical to be an area i was pretty good at................................................................................turns out i was wrong :cry:

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john_d

Post subject: Re: no spark from spark plugs

Posted: Tue Oct 13, 2009 7:05 am

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a question i'd like to know the answer to, does it matter what cps u use? 1.6 or 2l?

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happypaul

Post subject: Re: no spark from spark plugs

Posted: Tue Oct 13, 2009 3:17 pm

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Well as the flywheel is different on the 2.0ltr i would hazzard a guess at use a 1.6 one

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Jamie88

Post subject: Re: no spark from spark plugs

Posted: Wed Oct 14, 2009 6:15 pm

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as paul says you have to use the 1.6 crank position sensor as the 2.0 one makes the sensor sit alot ferver out due to the 2.0 flywheel being bigger than the 1.6 one. i had this problem on mine when i did the conversion, i left the 2.0 cps housing fitted and it wasnt reading the marks on the 1.6 fly wheel, so after a pain the the arse job of taking whe gearbox, clutch and flywheel off to change the damn thing it worked.

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