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Timing strobe pick up problem.
Posted: Mon Nov 20, 2006 2:11 pm
by landy_v8
Having a strange problem.
I am trying to adjust the timing after fitting a new dizzy and the strobe wont pick up a signal from the lead to plug 1. Its the type that clips over the lead and it will pick up from others. I have tried swapping plug leads around but it will only pick up from about half of the leads. All the leads are the same type and I have tried a different strobe and its the same.
Any ideas?
Jon
Posted: Mon Nov 20, 2006 4:49 pm
by ian.stewart
I would have a look at the cap or rotor, have you replaced the cap or rotor, as there are 2 different types of rotor arm,
Ian
Posted: Mon Nov 20, 2006 4:55 pm
by landy_v8
Hi Ian,
Yes I have replaced the cap and rotor but have tried every combination possible but still get the same results.
The engine runs, if a little rough but I cant get the timing strobe to pick anything up. I can get it to work on the lead to plug 6 but not 1
I am totally stumped.
Jon
Posted: Mon Nov 20, 2006 10:11 pm
by V8 Mini
i had simular issues with mine a while back, engine ran rough and timing pickup was intermitant. after advise from old forum i ditched the Halfords patten dizzy cap and rotor arm for a genuine lucas parts and all has been fine since.
Posted: Tue Nov 21, 2006 9:02 am
by landy_v8
That was my thoughts as well but I have lucas cap and rotor
Posted: Tue Nov 21, 2006 1:40 pm
by ian.stewart
I would think it may be an Idea to check you have a spark at No1
Whatdissy are you using, because there are two heights for the rotor arm, depending on what dissy you have, you can get a combination where the rotor arm is too low to get a good contact whih the contacts in the cap, try your old rotor arm.
Ian
Posted: Tue Nov 21, 2006 11:23 pm
by landy_v8
Hi Ian,
I have checked and I do have a spark on plug 1. That was one of the first things I checked.
Its a 35DLM8 dizzy with the correct height rotor arm. I tried fitting the old points dizzy and it was the same!
I am going to rip it all out and start from basics tomorrow. Maybe I have missed something daft?
Jon
Posted: Wed Nov 22, 2006 8:05 am
by ChrisJC
Have you tried a different strobe?
Chris.
Posted: Wed Nov 22, 2006 9:27 am
by landy_v8
Hi Chris,
Yes! I even went out and bought a new one just incase both of the strobes I have are knackered.
Jon
Posted: Wed Nov 22, 2006 6:20 pm
by landy_v8
Right, I have removed the dizzy, pulled the plugs, cleaned them as they were a bit fouled (still havent tuned the carbs properly yet), Re timed everything and put it all back.
I can now pick up from plug lead 1 and the timing is sorted.
Next issue!
I have attached a multimeter that has a tach facility and sometimes I get a stable reading and others its jumping all over the place. Its a 35DLM8 dizzy with the standard amp.
Any thoughts?
Cheers
Jon