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will not start after sitting all night

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Old 09-05-14, 09:13 AM
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will not start after sitting all night

i have 87 rx7 n.a. i drive it every day. i work 3rd shift after sitting all night it did not start. it turned over fine just would not crank never happened before. got it towed home about two hours later soon as it came off tow truck it fired right up. i was happy but confused checked every thing changed plugs , changed oil and filter . then about 3 weeks ago it did it again. got ride home left car at work came back about 3 hours later fired right up. had new auto zone plug wires on it put new n.g.k. wires on hoping they would help. then 3 days ago it did it again on labor day morning searched internet about problem thought i mite have put wires on wrong went and switched them it fired up got to looking closer i had everything right but it started with leading coil wires on trailing plugs and trailing coil on leading plugs. switched everything back right way and it started right up. now i just crank car at breaks and it starts in morning. does anyone know why car will not start till it warms up outside and why did it crank with plug wires crossed up. plan on cleaning up grounds this weekend any help or advise what i can do would be great . thank you
Old 09-05-14, 09:37 AM
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It's not the ignition.,
It's the fuel.
Get your injectors cleaned and serviced as they are leaking fuel into your engine and "flooding it" so the Car won't start up in the morning.
(serviced injectors means talking them out and getting them cleaned..not running bottled snake oil through.It's a waste of money)

The car will start once it is warm.That is because the Ecu sees that the temp is "up" and cuts fuel diwn on start up,so the Car won't flood out.
BUT if it is cold it needs to refer to it's cold start map and that is where you get a "no start".
Rolling over with NO EGI Fuse in place will maybe help if you get stuck.Then replace the fuse and try to start it.
(look up DEFLOOD )

Last edited by misterstyx69; 09-05-14 at 09:40 AM.
Old 09-05-14, 10:05 AM
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pulled the fuse the second time it happened it did not start or even try to start and then die like alot of peoples would do . when this happens i smell no gas like i smell when it starts and after it warms up outside and starts it does not smoke like its flooded. the first cold start of a weekend day i can smell gas but when this happens there is no gas fumes at all under the hood with it open. why did car start right up when i switched the wires.

Last edited by eboone; 09-05-14 at 10:11 AM.
Old 09-05-14, 03:20 PM
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well the car would start up if the Wires were correct!...(kind of struggling against itself if the wires were incorrect.).

another thing to check would be the connector to the Green sender on the back of the waterpump.(it is the water temp sender).
If that is loose.broken,pooched or badly connected it plays with the fuel as the ECU looks to that sender to compensate fuel.
Old 09-06-14, 07:27 AM
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the green sensor is pooch out and wiggles around alot. i am going to order one. thank you for your help i would have never thought of that.
Old 09-06-14, 11:09 AM
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If you find the cost too much,you can find one on am MX6...OR get your post count up to access the FS section.
Old 09-10-14, 07:46 AM
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"update" got sensor tuesday i installed , did not crank car all night at work car fired rite up. the "7" seem's to running a little better now or it mite be in my mind . when i was installing sensor i noticed the little square piece that connects the actuator for the port to the motor was not there so i ordered one . need that top end h.p. thanks for helping me out !!!
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