inertia switch
Senior Member
Joined: Jul 2007
Posts: 3,805
Likes: 480
From: Cape Girardeau MO
Carbureted engines with mechanical fuel pumps should not have an inertia switch.
The switch's function is to kill the electric fuel pumps in the event of a collision - so that fuel doesn't continue to be pumped into what could be a flammable event.
If your vehicle should somehow have an electric fuel pump, it's likely that the previous owner did not wire in an inertia switch. Not sure when EFI became a factory offering, but thinking it wasn't until '86/'87.
The switch's function is to kill the electric fuel pumps in the event of a collision - so that fuel doesn't continue to be pumped into what could be a flammable event.
If your vehicle should somehow have an electric fuel pump, it's likely that the previous owner did not wire in an inertia switch. Not sure when EFI became a factory offering, but thinking it wasn't until '86/'87.
Thread Starter
Junior Member
Joined: Jul 2008
Posts: 4
Likes: 0
Carbureted engines with mechanical fuel pumps should not have an inertia switch.
The switch's function is to kill the electric fuel pumps in the event of a collision - so that fuel doesn't continue to be pumped into what could be a flammable event.
If your vehicle should somehow have an electric fuel pump, it's likely that the previous owner did not wire in an inertia switch. Not sure when EFI became a factory offering, but thinking it wasn't until '86/'87.
The switch's function is to kill the electric fuel pumps in the event of a collision - so that fuel doesn't continue to be pumped into what could be a flammable event.
If your vehicle should somehow have an electric fuel pump, it's likely that the previous owner did not wire in an inertia switch. Not sure when EFI became a factory offering, but thinking it wasn't until '86/'87.
well the engine tries to crank but it just wont turn over... dumped gas into the carb and still wont turn over
next thing is to check spark i guess... but the truck ran fine before it sat for 2 months
it always used to be a little hard to start
but now it just wont turn over
Senior Member
Joined: Jul 2007
Posts: 3,805
Likes: 480
From: Cape Girardeau MO
With a carbureted engine - should be smelling raw gas if the engine is rolling over without lighting off.
Suggest to find an old spark plug, or to pull one of the plugs, and verify spark.
Fuel, spark, timing - has to be one of those. The challenge is to identify which one. If you've dumped fuel down the carb throat without so much as a 'fart' - spark would be the next thing to chase, IMO.
Suggest to find an old spark plug, or to pull one of the plugs, and verify spark.
Fuel, spark, timing - has to be one of those. The challenge is to identify which one. If you've dumped fuel down the carb throat without so much as a 'fart' - spark would be the next thing to chase, IMO.
