Fc cranks but wont start
10-20-11, 12:17 AM
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Fc cranks but wont start
My 86 rx wont start engine spins but doesnt start the car was sitting for 10 years bought it off an old lady. I gave the car a tune up replaced the plugs, wires, and filters but still nothing. Ive done the unflood method and get nothing but when I spray started fluid where the air intake connects to the engine and start it, it revs to about 3000rpms and then shuts right off even wen I give it gas it doesnt help it still shut off....what can it be, MAF?...what? Please help
10-20-11, 09:33 AM
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Engine, Not Motor
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If the car was sitting for 10 years, you'll need to rebuild the entire fuel system before it will run.
Hopefully you put a little oil in through the spark plug holes before you tried to start it. Otherwise, corrosion inside the engine may have caused some damage.
There are some very specific and important things to do when pulling a car out of long term storage:
http://www.aaroncake.net/rx-7/unstore.htm
Hopefully you put a little oil in through the spark plug holes before you tried to start it. Otherwise, corrosion inside the engine may have caused some damage.
There are some very specific and important things to do when pulling a car out of long term storage:
http://www.aaroncake.net/rx-7/unstore.htm
10-20-11, 10:30 AM
#4
For the most part yes as the only possible difference is the early RX7's had low resistance injectors while after 87.5 they changed over to high resistance injectors so if the 87 you are thinking about has low resistance injectors then everything is all the same while if it has high resistance injectors there would be one slight wiring modification required to take into account the different impedance of the injectors.
10-20-11, 10:53 PM
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Check the AFM to make sure that the flapper is moving freely.
A car that has been sitting that long will have a Corroded part or two on it and the AFM and the Air pump are 2 I have seen that become corroded over time,due to moist air.
A car that has been sitting that long will have a Corroded part or two on it and the AFM and the Air pump are 2 I have seen that become corroded over time,due to moist air.
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11-08-11, 09:30 AM
#15
Engine, Not Motor
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Mazda, an auto parts store, Mazdatrix.
Maybe your existing tank can be restored? Check the Yellow Pages for "tank repair" and give them a call. Many tanks can be easily fixed and then coated internally. The price is usually quite reasonable.
Maybe your existing tank can be restored? Check the Yellow Pages for "tank repair" and give them a call. Many tanks can be easily fixed and then coated internally. The price is usually quite reasonable.
11-08-11, 12:59 PM
#17
Try turning on the fuel pump
My 86 rx wont start engine spins but doesnt start the car was sitting for 10 years bought it off an old lady. I gave the car a tune up replaced the plugs, wires, and filters but still nothing. Ive done the unflood method and get nothing but when I spray started fluid where the air intake connects to the engine and start it, it revs to about 3000rpms and then shuts right off even wen I give it gas it doesnt help it still shut off....what can it be, MAF?...what? Please help
I'm going from memory so double check to make sure your shorting out the fuel connector and not something vital. There's a three pin connector, don't use that one. It's used to set the throttle position sensor.
One other thing, since it has been setting for 10 years, there's no doubt garbage in the tank and some of the fuel is now varnish. I had a similar problem and if you look at the fuel pump, disconnect the inlet line. There's a tiny cone shaped filter that does get plugged. You could eliminate this filter and get a large good quality filter with the correct line size to go on the fuel pump inlet side. I've heard that this can possibly starve the fuel pump but I've never seen it happen.
Good luck.
11-10-11, 10:38 PM
#20
I made an error. The color of the fuel pump connector is yellow it only has two clips
On RX-7s, there is a green electrical connection on the passenger side of the engine compartment. It should only have two connections. If you connect a jumper between these two connections, with the ignition on, you should hear the fuel pump running and fuel going through the rails. If not, it's possible the pump is dead or and I would check this, the fuse is blown.
I'm going from memory so double check to make sure your shorting out the fuel connector and not something vital. There's a three pin connector, don't use that one. It's used to set the throttle position sensor.
One other thing, since it has been setting for 10 years, there's no doubt garbage in the tank and some of the fuel is now varnish. I had a similar problem and if you look at the fuel pump, disconnect the inlet line. There's a tiny cone shaped filter that does get plugged. You could eliminate this filter and get a large good quality filter with the correct line size to go on the fuel pump inlet side. I've heard that this can possibly starve the fuel pump but I've never seen it happen.
Good luck.
I'm going from memory so double check to make sure your shorting out the fuel connector and not something vital. There's a three pin connector, don't use that one. It's used to set the throttle position sensor.
One other thing, since it has been setting for 10 years, there's no doubt garbage in the tank and some of the fuel is now varnish. I had a similar problem and if you look at the fuel pump, disconnect the inlet line. There's a tiny cone shaped filter that does get plugged. You could eliminate this filter and get a large good quality filter with the correct line size to go on the fuel pump inlet side. I've heard that this can possibly starve the fuel pump but I've never seen it happen.
Good luck.
11-11-11, 02:10 PM
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been there done that!
YES..an 86-88 tank is suitable.
Do not get an 89-91 tank as the tank is bigger and you would need the straps and then rewire the pump(different connections).
Before getting a tank though,try to shave the heads off the screws and the fuel pump assembly will pop off.(I was "frisky that day and did it with a dremel)
The only thing is that you need enough room to get at the rest of the screw to take it out with vise grips.That may involve dropping the tank as the room is limited by just that small Floor hole(pain in the ***!).
This may save you buying a tank..I bought screws that were M6X1.0(?..I think) and cut them a bit to shorten the length.
YES..an 86-88 tank is suitable.
Do not get an 89-91 tank as the tank is bigger and you would need the straps and then rewire the pump(different connections).
Before getting a tank though,try to shave the heads off the screws and the fuel pump assembly will pop off.(I was "frisky that day and did it with a dremel)
The only thing is that you need enough room to get at the rest of the screw to take it out with vise grips.That may involve dropping the tank as the room is limited by just that small Floor hole(pain in the ***!).
This may save you buying a tank..I bought screws that were M6X1.0(?..I think) and cut them a bit to shorten the length.
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