Chim parts hunter....???
Discussion
Gorvid,
I have read your related thread re:- misfiring and would just like to say, before you go off buying a whole new ignition system, do one last check.
I had a similar problem not long after fitting my cam. I was assured by a tuner that my HT was fine, so (mistakenly) took his word for it. After going through the whole ECU and sensors, I then managed to borrow a coil, ignition amp - no difference. Changed the plugs, dizzy cap - no difference. Checked all connections - same old same old.
Then I used one of these:-
http://www.justoffbase.co.uk/In-Line-Ignition-Spar...
(well, one like it anyway).
Although everything felt well connected, I had an intermittent miss due to one of the plug leads not seated correctly in the dizzy. It was basically popping out of its connector as soon as it was pushed in, although hidden under the rubber cap. Hard to believe, but this one lead was causing a massive problem. It missed, then felt like it was running out of fuel.
My best guess is that the lambda was seeing a rich mixture of unburnt fuel and leaning it off as a result.
I found the problem with the above tester (it would be the 7th one I checked wouldn't it?!!), traced it back to the dizzy cap, which is bloody awkward under the coolant pipe, squeezed the connector so it would sit home properly and bingo!
Hours and hours of chasing my arse because of 1 plug lead. Have a butchers before spending £££££££££
I have read your related thread re:- misfiring and would just like to say, before you go off buying a whole new ignition system, do one last check.
I had a similar problem not long after fitting my cam. I was assured by a tuner that my HT was fine, so (mistakenly) took his word for it. After going through the whole ECU and sensors, I then managed to borrow a coil, ignition amp - no difference. Changed the plugs, dizzy cap - no difference. Checked all connections - same old same old.
Then I used one of these:-
http://www.justoffbase.co.uk/In-Line-Ignition-Spar...
(well, one like it anyway).
Although everything felt well connected, I had an intermittent miss due to one of the plug leads not seated correctly in the dizzy. It was basically popping out of its connector as soon as it was pushed in, although hidden under the rubber cap. Hard to believe, but this one lead was causing a massive problem. It missed, then felt like it was running out of fuel.
My best guess is that the lambda was seeing a rich mixture of unburnt fuel and leaning it off as a result.
I found the problem with the above tester (it would be the 7th one I checked wouldn't it?!!), traced it back to the dizzy cap, which is bloody awkward under the coolant pipe, squeezed the connector so it would sit home properly and bingo!
Hours and hours of chasing my arse because of 1 plug lead. Have a butchers before spending £££££££££
An HT tester is essential if you're tracing possible ignition problems. Although I do have a set of the inline plugs similar to the ones you linked to, I find that an ordinary cheap passive strobe light is better for the job. It connects in series with an HT lead but has long enough leads to allow it to be positioned somewhere convenient to see. That can be very handy when you're chasing a problem that only shows up occasionally.
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