I'VE GOT AN 87 TURBO II. I JUST PUT IN A NEW STREET PORTED MOTOR. 100 MILES SO FAR. IT IS FLOODING AND WILL NOT START. I HAD THIS SAME PROBLEM WITH THE OLD MOTOR, SO I KNOW IT IS NOT A MOTOR PROBLEM. I CAN GET IT TO START BY PLAYING WITH THE MAIN EGI INJ FUSE. I THINK I MUST HAVE A BAD SENSOR SOMEWHERE. ONCE IT FIRES, IT RUNS ALRIGHT, BUT STILL FEELS RICH. PLEASE HELP!

 

Flooding is mainly due to low compression. Your old engine was low compression, before it (probably) finally let go. Your new rebuild is also low compression. Difference is, your old one was getting worse as it ran, your rebuild will get MUCh better as it runs. After 2000 miles it will never flood again, unless you a) do something dumb or b) have very bad injectors.

Just put in a cutoff switch for now, and drive the hell out of it(mileage, not abuse).

 

you dont have to buy a cut off switch, when your about to start the car hold the gas pedal all tha way down so it stop more gas from entering. (it actually works) mazda put a built in cut off ya just have to learn the trick.

 

mazdaboy, please stop spreading misinformation. That cutoff at WOT is ONLY for 89-91 cars. The 86-88 cars DO NOT have this feature, and will continue injecting fuel. Going WOT can have helpful results, even on the older cars, IF and ONLY if fuel is drprived first, by a fuel cut switch. The extra air that WOT produces pushes excess fuel out the exhaust ports and allows the engine to unflood itself in light to moderate cases.

 

Or, you could get a freind to unplug the fuelpump while your cranking it and get him to plug it back in after.

Also, Kevin I heard that a ported engine will test lower compression than a stock port engine. This true?

 

mine has a cut off swithch. if it doesnt start then you flip the switch crank the engine a couple of times then flip it back on and it starts like a charm.