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primer vs. accelerator pump

 
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brian



Joined: 02 Jan 2006
Posts: 643
Location: Sacramento, California, USA
PostPosted: Tue Feb 21, 2006 11:27 am    Post subject: primer vs. accelerator pump Reply with quote
In priming and starting the engine it is useful to know where the fuel
goes from these two sources. Pumping the throttle causes the accelerator
pump to squirt fuel into the throat of the carb. This fuel usually runs
back down and into the airbox causing the potential for a fire there if
the fuel ignites. That is why you should keep cranking the engine during
an induction system fire.

The fuel from the primer goes into the supercharger housing. Raw fuel
from here will run down into the intake risers for the lower cylinders.
There is a potential for hydraulic lock if you prime too much (put too
much fuel in there).

Know your systems.

Brian
brian-yak(at)lloyd.com

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