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Author smallblock xe guru's
Jenko_Sport
Member
Registered: 25th May 06
Location: Stoke-on-Trent
User status: Offline
24th Jan 11 at 18:24   View User's Profile U2U Member Reply With Quote
Work this one out for me because im stumped

got a missfire throughout the rev range and its cylinder 3 thats down.

Tried 3 working coilpacks - still the same
swopped leads round - still the same
cleaned and swopped plugs round - still the same

all leads are sparking as they should bar the lead thats connected to cylinder 3 on the coilpack getting a spark so strong that if you remove the lead off the plug it sparks all round the plug hole.

cylinder 3 is getting fuel as the end of the pug is wet.......

Any idea's as im stumped
ash_gsi
Member
Registered: 19th Jun 08
Location: Newchapel, Stoke-on-Trent
User status: Offline
24th Jan 11 at 18:44   View User's Profile U2U Member Reply With Quote
rings? sticky valve?
Jenko_Sport
Member
Registered: 25th May 06
Location: Stoke-on-Trent
User status: Offline
24th Jan 11 at 18:45   View User's Profile U2U Member Reply With Quote
The engine ran faultless lastnight turned it off, came to it this morning to go to uni and was missing from first turn of the key.
AlexW
Member
Registered: 25th Oct 08
Location: Essex
User status: Offline
24th Jan 11 at 18:53   View User's Profile U2U Member Reply With Quote
Compression test it.
andyc1234
Member
Registered: 7th Nov 06
Location: Lancashire
User status: Offline
24th Jan 11 at 18:59   View User's Profile U2U Member Reply With Quote
tried swapping cyl 2 and 3 round on the coil?
Jenko_Sport
Member
Registered: 25th May 06
Location: Stoke-on-Trent
User status: Offline
24th Jan 11 at 19:00   View User's Profile U2U Member Reply With Quote
Yea swopped the leads on 2 nd 3 andy.

Going plug it in first see what that comes up as and then i think compression test is next.
andyc1234
Member
Registered: 7th Nov 06
Location: Lancashire
User status: Offline
24th Jan 11 at 19:01   View User's Profile U2U Member Reply With Quote
any hg signs?
Jenko_Sport
Member
Registered: 25th May 06
Location: Stoke-on-Trent
User status: Offline
24th Jan 11 at 19:04   View User's Profile U2U Member Reply With Quote
heaters still run hot and doesnt seem to of used any water.
Warren G
Member
Registered: 14th May 06
Location: Kent
User status: Offline
24th Jan 11 at 19:04   View User's Profile U2U Member Reply With Quote
compression test, dont have to a guru to find bent valves
Jenko_Sport
Member
Registered: 25th May 06
Location: Stoke-on-Trent
User status: Offline
24th Jan 11 at 19:06   View User's Profile U2U Member Reply With Quote
What thats confusing me the most is it was running fine before switching it off and going back to it the morning after.
lee303
Member
Registered: 1st Jul 08
Location: under the nova usually
User status: Offline
24th Jan 11 at 21:23   View User's Profile U2U Member Reply With Quote
could still be the injector even though its getting some fuel
Ryan_G1
Member
Registered: 29th Aug 05
Location: East Ayrshire
User status: Offline
24th Jan 11 at 22:27   View User's Profile U2U Member Reply With Quote
Swap the injectors round with another cylinder to run an injector fault out, if not then id say HG
Jenko_Sport
Member
Registered: 25th May 06
Location: Stoke-on-Trent
User status: Offline
24th Jan 11 at 23:10   View User's Profile U2U Member Reply With Quote
Ran fault code reader and come up as

0200
0412
Ryan_G1
Member
Registered: 29th Aug 05
Location: East Ayrshire
User status: Offline
24th Jan 11 at 23:18   View User's Profile U2U Member Reply With Quote
0200 - injector malfunction

0412 - Secondary air injection solenoid A circuit malfunction

Try swapping the injector.
Jenko_Sport
Member
Registered: 25th May 06
Location: Stoke-on-Trent
User status: Offline
25th Jan 11 at 00:27   View User's Profile U2U Member Reply With Quote
Going get it to a mates garage in the morning where I can have a closer look at it.

 
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