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CDI/8 DROPPED 2 CYLINDERS

PostPosted: Mon Aug 04, 2008 3:17 am
by Gturbo
Installed PDM & also rewired car to tidy up the wiring to M800
I have been frantically trying to work through this issue with no luck, CDI8 doing something really strange!
Running 4 Mercury Coils
It runs ok for the first 5mins then intermittently seemed to stop firing number one cylinder..Now i have also lost number 2 Cylinder...
3 and 4 Plugs have Colour, 1 & 2 Plugs are Wet.
Diagnostics are as follows
Swapped the leads & spark plugs
Swapped over coils
Checked all Grounds & connections
Swapped over the injectors & test firing
Compression test
Zero Error messages reported by M800 besides the Lambda as not enough time to warm up
The only other changes i have made to the setup is go to the flywheel for the reference pick up instead of dizzy .. But still use dizzy for sync pulse & showing (50% Sync Status). (There are 2 ref points on the flywheel) changed the setting in the ECU to reflect changes as you would..CRIP seems to be spot on
I don’t know what else to check. Something is telling me that the CDI/8 is Suspect. Somehow i find this hard to believe

Re: CDI/8 DROPPED 2 CYLINDERS

PostPosted: Mon Aug 25, 2008 7:44 pm
by Gturbo
Problem fixed :D ..found that the fuel pump was slowly droppping off in pressure causing a lean condition .
replaced it and Bobs your uncle :lol:

Re: CDI/8 DROPPED 2 CYLINDERS

PostPosted: Tue Aug 26, 2008 9:59 am
by figgie
Gturbo wrote:Problem fixed :D ..found that the fuel pump was slowly droppping off in pressure causing a lean condition .
replaced it and Bobs your uncle :lol:


wow.

How did you find the fuel pump issue? :) Logging it?