i hate this... ive worked on fcs for 6 years now, and i always seem to find something that just makes me scrath my head......

ok, heres the deal.. put a good compression motor in a fc i picked up dirt cheap w/ a blown motor... now it turns over.. and when you first crank it, it sounds like its gonna fire... but then goes directly to the basic turn-over sound.... and then stays that way unless i leave the car alone for a little while, then try to restart, which it then does the same thing i described earlier....

1. its not flooding
2. replaced maf, ecu, cas, fuel pump
3. timing is dead on tdc
4. no blown fuses
5. spark plugs are good

any ideas? the only thing i havnt checked was the primary injectors (mainly due to not wanting to pull plenum off again).. im scratching my head so hard on this, my scalp should be bleeding




oh, its a 1988 gxl automatic

 

Its flooded

 

i guess its possibly a stuck open primary.... but on the other hand, the plugs were not fuel soaked when removed .. so again im baffled

 

try holding the throttle to the floor when cranking. this will allow more air into the engine. so if it is flooding you have a better chance of igniting the fuel.

 

tried that w/ the exact same results...... like i said, ive used most of the "fc trickery" on this damn thing, but nothing seems to work......... the only thing i cant friggen do which usually works is bump-start it.... since its an automatic, thats out of the question

 

Use a stethescope to make sure the primary injectors are functioning when you crank it over.

Some ether sprayed into the intake can often help a flooded car in combination with some oil injected into the spark plug holes.

Make sure the battery is REALLY fresh and/or hook up a charger that has a "start" function.

Excessive premix can sometimes help get a better seal on the initial startup, as can a good help of assembly lube through the plug holes.

 

Only works on s5's unless you have a modded ecu.

 

Works fine on S4s as well.

Note that he didn't say "cuts fuel", he just said "allows more air into the engine".

On ANY flooded RX-7 this can often help.

 

well try turning the key while gas pedal to the floor.. i have to do that from time to time and car starts right up.. It basically started happening when i replaced my injectors..

 

:o My bad didnt catch that Aaron. Check your crank angle sensor, mine somehow came unplugged and had the same symptoms as yours, even though your timing is fine, I would still check it.

Btw, person that posted above me....read the ENTIRE thread...

 

Roll start.

 

aight.. thanks i'll look into that asap..

 

omfg man. READ...lol, its an automatic....

 

thatnx everyone.... ill try a few of these tonight.. especially aarons ideas... but ill try them all .. *crosses fingers*

 

jesse try the coil closest to the light...theres a little plug and the pins usualy come out of the plug thats what happened to mines until Dave found it

 

Main relay maybe? Or one of the coils?