My Rx-7 Wont Run
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Joined: Jan 2005
Posts: 6
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From: ohio
My Rx-7 Wont Run
I recently bought a 1985 rx-7 12a that was sitting for 5 years and it wont run.
It turns over fine, and has a spark, but the plugs foul almost imedetly and it floods. I was in the carb and the float was broke in two, but I fixed it
and it didnt help. i replaced the fuel pump, fuel filter cleaned out the tank,
and it still wont run.
It turns over fine, and has a spark, but the plugs foul almost imedetly and it floods. I was in the carb and the float was broke in two, but I fixed it
and it didnt help. i replaced the fuel pump, fuel filter cleaned out the tank,
and it still wont run.
Joined: May 2002
Posts: 5,972
Likes: 37
From: Ottawa, Soviet Canuckistan
Cars that sit for a long time develop many problems. Mine sat for about the same amount of time and my engine was actually siezed!
Sitting gas turns into a varnish-like substance, and if you tried to start your car before cleaning out the tank, filter and lines you probably pushed a bunch of that gunk into your carb. then again, your carb probably had lots of that gunk in it already from sitting.
I would recommend getting your carb rebuilt. Rx7Carl and Sterling are two guys on this forum who work together rebuilding carbs. They do a great job. Depending on whether or not you have emissions in your area, and the depth of your pocketbook, they can either do a stock rebuild, or they can modify your caburetor and turn it into an amazing high-flowing beast.
Another thing I should mention is that rotary engines don't unflood just by leaving them set. This is an unfortunate truth, because there is no connection between the bottom of the combustion chamber and the oil pan. The only proper way to deflood a rotary is to remove the fuse for your fuel pump, remove your spark plugs, turn the engine for about thirty seconds with the plugs out, put everything back together and try again.
If you don't disconnect the fuel pump and run it without plugs, then the excess gas will stay in the combustion chamber and keep fouling your plugs.
Other things that you should ABSOLUTELY do before driving a car that has been sitting are:
- Oil and Filter
- Transmission and Rear Differential Fluid
- Thermostat and Antifreeze flush/refill
- Spark Plugs, Spark Plug Wires, Distributor Cap and Rotor
And make sure that the tank has been properly flushed of all the old varnish crap, and filled with new gas. Lower octane = better. Or at least just as good as higher octane. I won't get into that here.
So try unflooding it and replacing your plugs, and if it still re-floods then send your carb off to Rx7Carl
Jon
Sitting gas turns into a varnish-like substance, and if you tried to start your car before cleaning out the tank, filter and lines you probably pushed a bunch of that gunk into your carb. then again, your carb probably had lots of that gunk in it already from sitting.
I would recommend getting your carb rebuilt. Rx7Carl and Sterling are two guys on this forum who work together rebuilding carbs. They do a great job. Depending on whether or not you have emissions in your area, and the depth of your pocketbook, they can either do a stock rebuild, or they can modify your caburetor and turn it into an amazing high-flowing beast.
Another thing I should mention is that rotary engines don't unflood just by leaving them set. This is an unfortunate truth, because there is no connection between the bottom of the combustion chamber and the oil pan. The only proper way to deflood a rotary is to remove the fuse for your fuel pump, remove your spark plugs, turn the engine for about thirty seconds with the plugs out, put everything back together and try again.
If you don't disconnect the fuel pump and run it without plugs, then the excess gas will stay in the combustion chamber and keep fouling your plugs.
Other things that you should ABSOLUTELY do before driving a car that has been sitting are:
- Oil and Filter
- Transmission and Rear Differential Fluid
- Thermostat and Antifreeze flush/refill
- Spark Plugs, Spark Plug Wires, Distributor Cap and Rotor
And make sure that the tank has been properly flushed of all the old varnish crap, and filled with new gas. Lower octane = better. Or at least just as good as higher octane. I won't get into that here.
So try unflooding it and replacing your plugs, and if it still re-floods then send your carb off to Rx7Carl
Jon
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