Hello guys,



Well its a long story, but ill just start with my problem.





A few months back the motor flooded, and wouldnt start. I checked spark compression, and fuel. Compression was 50 50 50 and it would hold to 70ish. I knew I had fuel because everytime I tryed to unflood and put my plugs back in, after trying to start it, the leading plugs would be wet. Didnt check the line yet, but the pump is wizzing.



I tested for spark with my sears tester that you put over the wire without having to disconnect the wire. It showed they got power so I ASSUMED it was ok.



I then bought new plugs and replaced thinking my plugs were at fault. Tryed to start nothing. This time I checked for spark AT the plug. Nothing. Then I tryed by putting the plug back in and pulling the boot to see if it would jump. Nothing.



So now im thinking my KV's are low and not giving enough power to jump. Class starts the 5th of next month so I wont have an O-Scope till then. Any ideas on what I can check for now, or if I did something wrong?



BTW There is no battery in the car, im just using my battery jumper attached to my cables. Can that cause these problems.



Any Ideas. Thanks guys



Mods are Power FC, No commander, Stock turbos, stock motor. 57k miles on car, Boosting at 12psi. Turbo back exhaust no cats, and intake.



Ran PERFECT before it flooded.

 

the question is... why did it flood?



check if the map sensor is connected, cuz if it isnt, then your car will just keep pouring fuel into the engine.



did you take out the EGI fuse when you did the compression check? and did you make sure that the compression tester was sealed tight? cuz 50-50-50 would be low if you're talkin in PSI.

 

50?.... seems kinda low to me. Pull the lower plugs.... stick your finger in the hole, and get someone to crank the engine over for you. Let us know if you can hold you finger in there without it blowing it back.....





Also, a low battery will cause it to crank at a lower RPM which could be the problem also. ...or could be low enough voltage to not provide enough power to certain systems in the car to operate properly.

 

Check the connections leading to the coils- There is a plug located just beneath the map sensor- It provides power and signal to your coils-

 

Sorry forgot to add in my first post.



I was doing an oil change and knocked my map sensor vaccum hose off. Didnt find it till the next day, and it wouldnt start.



I put my hand near the leading hole on both housings and it sure does suck. Plus the power pulses seem pretty strong. Im guessing the low compression is due to fuel that might of washed the oil or dried up the housings? First time I unflooded fuel was just pouring out.



I double checked the plug wires and what I can see of the coils, everything seems tight. I was looking for a loose connections thinking that maybe something wasnt hooked up. Cant really find anything.



I sprayed carb cleaner, and it didnt fire. So its either compression or spark, or both. But with the low numbers its hard to tell. Some say its ok, some dont. But I cant seem to get spark. Im going to buy another tester and see if I can get it to spark. But I put the plug right up to a nice ground, and still nothing. Plus it didnt even jump from the wire to the tip of the plug when I backed the boot off.



Im also gonna put some more fuel in the tank. I think I read somewhere, correct me if im wrong. When a rx7 floods, there is a possibility of it just dumping till the tank is empty?



Battery is totally out, Charger is jumping it. Battery doesnt want to hold a charge anymore. I think its at 6.5V. Gonna get a yellow top down the road when she starts.





Ill triple check all wires going to coils, and the plug underneath the map. Thats a very good possibility, seeing that I knocked the vaccum hose off and didnt even notice.



Thanks guys

 

UPDATE!!!



Well it still doesnt start, but I brought the compression up to around 70, 75ish. I dont think its a compression problem, and I put some starter fluid in and still nothing.



I bought a new freaking spark tester, and im still not getting any spark. What should I gap the tester too? I checked power going to coil, and im getting 12volts at the one I can reach, and that one isnt sparking.



I looked for that connector under the map. And I couldnt find any. Everything seems connected, but I have a gut feeling that there is something disconnected. Just cant find it.



Any ideas, or pics of that connector. Im real stumped now! lol



Thanks!

 

get a new sparkplug (don't install it) and connect the plug wire to it.. hook a jumper wire to the "nut" portion of it with electrical tape. Hook the other end of the jumper wire to a ground. Let the spark plug sit somewhere that you can see the electrode end of it while someone cranks the engine over. This is verify that you do or do not have spark,... could be a tester unit issue.



If you are getting 12V to the coil... the afore mentioned connecter is plugged in (could be loose though) it's a black, 4 pin connector that is about half way of the engine, down near where the oil dipstick is located. Just follow the wires off of the coils back about 12 inchs and you will find it.



Where in Fl are you located?

 

Well I tryed what you said about using a new plug awhile back. I even used a plug off of my working Corolla and tryed to ground that also.



I have two testers, one that reads off of the wire that is from sears, and one from autozone, OEM I think it is. Im going to be buying the one at matco tools. Just got the autozone one so I can double check my crappy sears one.



Funny thing is that the sears one reads power when the key is on, and when cranked, but the one from autozone isnt doing a thing. Doesnt even jump the gap. Nothing!



I have four new plugs sitting in my garage also. So im pretty sure its not a plug issue. I was thinking wires, but I dont see how they can crap out like that.



I live in Hernando Florida.

 

Well, I still have not been able to get spark...



I searched this site and found some info regarding an issue someone else had with a no spark problem. One of the members stated "Check to see if you are getting 12v positive to the coil. Then also check your negitive on the coil to see if you get a 12v flash." I tested the negitive and didnt get the "flash". Im guessing he is refering to the Switching device to trigger the coil. So im going to search and see if my CAS is loose. Ignitor was plugged in. But im not sure how to test it without the special tool. So im lost there.



Hope I find the CAS loose! Should be a job to find it though.



Thanks

 

are you throwing any codes???



i found out that one cas was mis aligned causing the leading plugs not to spark



GL man