Quote:
Originally posted by LittlebittaContact
preignition or detonation
it would fake that the timing was off
|
You said it was falling on its face - as in it had a flat spot.
The fix was to reinstall the heat riser tube. Increasing the air intake temp will make a preignition or detonation problem get worse.
Preignition can be heard because the engine PINGS.
Detonation causes knocking. You didn't mention either of those things happened.
More likely, the increased air temp helped keep your gasoline atomized thereby keeping the A/F ratio where it needs to be. This is what the heat risers function is.
Check that your coolant lines are going to your intake manifold. This also serves to heat the air mixture to keep the gas from condensing out of the air/fuel mix (also keeps the throttle plate from icing up and getting stuck).
http://www.hastingsmfg.com/Service%2...reignition.htm