How do you test to see if operating . If I use a strobe lamp when cold will I see an advance in the timing from 10 degrees advance at 1000 rpm that is indicated on the pulley and timing marks when engine is hot. If so what will the advance degrees be when strobe is pointed at marks when engine temp is less than 60 deg C.
Appreciate advice
Regards Robert
Thermal ignition advance
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swiftcruiser
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barker_001
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Re: Thermal ignition advance
Full vacuum advance is applied when the thermal ignition advance is in operation. For the SE the total advance will be about 30 - 32 degrees BTDC, so noticeably different from the normal warm idle advance of 10 degrees BTDC. There tends to be an increase in piston slap noise while the 30 degree advance is in operation too.
Hope this helps,
Hope this helps,
Bryan
1990 Excel SE
"Look, there's a Ferrari..."
1990 Excel SE
"Look, there's a Ferrari..."
-
swiftcruiser
- Senior Poster
- Posts: 280
- Joined: Tue Jan 31, 2012 23:20
- Model: Excel SE
- Colour: Calypso Red
- Year: 1988
- Location: Hampshire
Re: Thermal ignition advance
Thank you Bryan, using your description able to test valve, works as you described, explains why engine revs change when starting from cold for no previous apparent reason, now I know why.
Next project to see why hydro carbons high on tickover, smell of unburnt fuel, runs ok and exhaust a dark grey not sooty black, and doesn't drink fuel.
Regards
Robert
Next project to see why hydro carbons high on tickover, smell of unburnt fuel, runs ok and exhaust a dark grey not sooty black, and doesn't drink fuel.
Regards
Robert