I've got spark..I've got fuel and air but won't start?
 

Basically i purchased this Turbo II a couple months back and i've only driven it a couple of times, last time i drove it i pushed her a little bit and i'm guessing whoever filled the coolant last didn't get all of the air out of the system, or because the under pan is missing because it began to run hot and i had to put her in for the night and coolant had spilled from the over fill tank onto the ground. I'm pretty sure they coolant seals are still fine seeing as how i only let it get up to about a little more than half before i shut her off. The car will not start now and i have done no modifications it will crank and crank but nothing.. i've checked all the coils as well as made sure i'm getting fuel. I have no leaks of any sort that i can find, i've tried deflooding it numerous different ways but alas no luck. I can smell fuel just getting pumped through the exhaust if you stand behind it and whenever i crank it without the plugs and can just smell the stench of fuel coming out of the spark plug holes. but it seems no matter how much i deflood it still will not start.

Let me be the first to say: Compression test........do one. Don't waste your time trying to diagnose anything, unless you are sure your motor has good compression.

well i know the motor had lower compression on the rear rotor than the front but still that shouldn't stop it from starting at all considering i had driven it a couple months prior to this..

Could just be REALLY flooded. Push start usually takes car of that!

Unflood the engine and then check compression and post your findings.

Sorry, but that really means very little. Don't look for a justification to skip the compression test.....just do it, and see where you're at.

i agree with the compression test. im low on front rotor and have a hard time starting too. try this after unflooding again floor the gas pedal then turn the key only try to start it for a few seconds. if you get a stronger attempt at the motor trying to turn over then try again. be warned its super easy to flood this way. also DO NOT ROLL START A FLOODED ENGINE!!! is bad bad bad, well its a nice way to give yourself some more compression problems

If you do have good compression, then check to see if your injectors are are getting signal. You can have fuel pressure and spark but with no signal to the injectors it will not fire over.
Thanks Robert

Exactly....there are steps to follow to diagnose your problem, but they all require that you eliminate low compression as the culprit.

I would rather roll start then put ATF in it and run the risk of carbon lock!

honestly i don't really wanna tinker with the car anymore the owner had told me that it had low compression on the rear rotor before i bought it.. i was just trying to get the most use out of it before i had to rebuild it.. but i think i'm just going to rebuild her.. because this is most likely my problem and i most likely lowered compression even more by hitting fuel cut a few times while playing around.. Looks like i'm sending her to kevin landers guys. thanks

my roomate thinks i have some huge underlying issue but honestly i haven't touched a single thing on this car since the last time it ran and theres really nothing that would straight up prevent the car from starting besides the obvious we've gone ove.

I'm almost 100% posetive the compression is still decent, because when i crank it without the plugs i can hear strong pulses and they're never irregular..

Well TJ I can tell you the easiest fix, Sell me your car!
You let it sit too long, remember I started the car that sat for 2 years!
Put some NEW gas in the car, the old gas is NOT helping.
Put some ATF in the motor through the spark plug holes,pull the fuel fuse and crank it a few times. Put the spark plugs back in and crank it alot more, some more, and then put your fuel fuse back in.
The crank it with and without fuel until it starts.

You migtht want to get some new plugs too.

Make sure you have a strong battery in it too.

But seriously, you can sell me your car!

dry spark plugs and restab the cas, timing might be way out.

Are you kidding me? You're going to go through all that, because you don't want to screw a gauge in to your spark plug hole, and know for sure?

Go buy one, and do the test. If you own an Rx7, you should have one, period. Would you rather spend a bunch of time, money, and effort, stabbing in the dark? I can't imagine why you would.

The test is simple, and can be done with almost no effort. It will take you 1/10th the time, of restabbing the CAS, Draining the gas, Buying new plugs, Adding MMO...instead of ATF, pulling the fuses, verifying fuel, verifying spark, just to realize, your rear rotor has a compression of 40, but still makes 3 nice chugs.

Oh... wait a second. So your saying ATF is GOOD in a rotary motor? Oh shit so im not wrong!!! Wait a sec but ppl say that ATF is bad in a motor?

if you guys cant tell this is dripping with sarcasim, but its good to have some vindication.

make sure its not flooded and put oil in both housings, it helps alot with starting

and if you really want to cheat, actually i think its the smart way to do it but, get another car start it and connect some jumper cables, this way you can use the starter to motor the motor, rather then using a socket, its faster. also it will be really hard to start the car, and will take some time, thats why youll need another car with jumpers, unless you like dead batteries. if you cant get another car, try using an electric drill to turn the pully, might also help. some people recomend using eather, but thats scary, so instead try wd-40 or carb cleaner, plus you dont get as many raised eyebrows.



also, expect alot of smoke. and i mean A LOT AND A LOT AND A LOT of smoke, i cant emphasize that enough.

fella's i've already tried ALL these things. I thought i had already posted that.

I have the same problem with a car of mine. The compression is the same as before. I'm going to try pull starting today. I'll let you know how it goes.

Here is how mine was finally fixed. The car would spark when it was turned over but the spark was weak. When I put the plug into the coil directly the spark was much stronger. I inspected the wires and they were very worn with one completely broken where the terminals attach to the coil. Fifty bucks got me a set of cut your own 8mm Accel spark plug wires for a V8 (so I can make a new set for my other 7 too). I tried to start again, but the car was flooded.

I decided it was time to just pull it. After less than 20 feet of pulling, the 7 moves under its own power again! All those tries to start with crap spark must have left it pretty flooded.

Good luck with yours. Maybe you have a similar problem.

Josh

Rx7
 

"Hey wanna buy my car two thousand bones, 137,000kms 1986 mint gxl"

if i can get a hold of my asshole friend, im sure he'll take u up on that.(id take you one that but i just picked up an 88gxl)

wait where is it