DerekJ
Luke Skywalker
Offline
Here is another mystery to solve
Yesterday I took the car out for a final test prior to my first event this year. With a new Odyssey Racing battery it fired up first time after three prods of the Webers. Great 45 minute test, car ran perfectly with some high speed work. Parked it on the driveway and had some lunch. Went out an hour or so later to move it to the garage and it wouldn't start! Turned over perfectly but not a splutter, nothing. I assumed no spark.
Last year I fitted a Powerspark ignition system, same as the Pertronix. I assumed that may be the problem. I removed a plug and earthed it to the block but couldn't see a spark. As you can't test a Powerspark I re-installed the points. I got a yellowish spark but still nothing. No spluttering or attempt to fire up.
Powerspark told me the system is more sensitive to a poor coil than points are so I installed a new Lucas Sports coil and obtained what I thought is a pretty good bluish spark, but still not firing when I try to start it. I removed the fuel supply to the last Weber and fuel pumped through perfectly. I also added a gallon to the tank and cleaned up the plugs, still nothing.
In addition I replaced the carbon post in the dizzy cap and also tried a couple of other rotors. Still wont fire even though I get a spark when earthing to the block. That's it for today, time for a drink!
The timing of the distributor was altered quite a bit when I switched from points to electronic so it may be out for the re-installed points however I still think it should at least fire up and cough and splutter. However, tomorrow I will re-install the electronic ignition to see if it will start, which would mean it probably was a coil problem. I could replace the dizzy cap but I don't think that is the problem as Im getting a spark.
Any other ideas? Ive got a spark, I believe Ive got fuel and Ive got compression, its supposed to start!
Its a mystery why it wouldn't re-start on the driveway after running perfectly. What happened during that time?
BTW. The new Lucas Sport coil is 2/3 the size of the old one. Is that increased efficiency or just cost cutting?
Yesterday I took the car out for a final test prior to my first event this year. With a new Odyssey Racing battery it fired up first time after three prods of the Webers. Great 45 minute test, car ran perfectly with some high speed work. Parked it on the driveway and had some lunch. Went out an hour or so later to move it to the garage and it wouldn't start! Turned over perfectly but not a splutter, nothing. I assumed no spark.
Last year I fitted a Powerspark ignition system, same as the Pertronix. I assumed that may be the problem. I removed a plug and earthed it to the block but couldn't see a spark. As you can't test a Powerspark I re-installed the points. I got a yellowish spark but still nothing. No spluttering or attempt to fire up.
Powerspark told me the system is more sensitive to a poor coil than points are so I installed a new Lucas Sports coil and obtained what I thought is a pretty good bluish spark, but still not firing when I try to start it. I removed the fuel supply to the last Weber and fuel pumped through perfectly. I also added a gallon to the tank and cleaned up the plugs, still nothing.
In addition I replaced the carbon post in the dizzy cap and also tried a couple of other rotors. Still wont fire even though I get a spark when earthing to the block. That's it for today, time for a drink!
The timing of the distributor was altered quite a bit when I switched from points to electronic so it may be out for the re-installed points however I still think it should at least fire up and cough and splutter. However, tomorrow I will re-install the electronic ignition to see if it will start, which would mean it probably was a coil problem. I could replace the dizzy cap but I don't think that is the problem as Im getting a spark.
Any other ideas? Ive got a spark, I believe Ive got fuel and Ive got compression, its supposed to start!
Its a mystery why it wouldn't re-start on the driveway after running perfectly. What happened during that time?
BTW. The new Lucas Sport coil is 2/3 the size of the old one. Is that increased efficiency or just cost cutting?