Flooding problem with rx7 86 non-turbo
04-10-2002, 10:16 PM
#1
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Join Date: Apr 2002
Posts: 233
Hi,
I have a big problem that nobody seems to know the solution, but lately it become worst. I own this car for about 12 years and it never had a lot of power for a 146 HP engine, and I've always noticed something like a short interruption of power when crossing the 3800 RPM on high acceleration. But last year, it started to flood while running, on the road, not even able to idle. After checking, I discovered that the front rotor chamber was flooded with gas. I disconnected the electrical connection to the front secondary injector and the problem disappeared. Since the computer is sinking to ground to activate injectors and there was no ground problem with the wiring, so I thougt the problem was coming from the computer (the box under the feet of the passenger). So I tried a used and working computer, but same problem. I changed the secondary injectors too and still there. I must say that the problem is intermittent, sometimes when I reconnect the injector it works fine. Lately the problem got even worst, both secondary injectors got the same trouble. I don't know if a problem with a sensor could produce a dramatic impact like this on injector activation. So please if you have suggestion that could light me, let me know.
Thank you. :shakehead:
I have a big problem that nobody seems to know the solution, but lately it become worst. I own this car for about 12 years and it never had a lot of power for a 146 HP engine, and I've always noticed something like a short interruption of power when crossing the 3800 RPM on high acceleration. But last year, it started to flood while running, on the road, not even able to idle. After checking, I discovered that the front rotor chamber was flooded with gas. I disconnected the electrical connection to the front secondary injector and the problem disappeared. Since the computer is sinking to ground to activate injectors and there was no ground problem with the wiring, so I thougt the problem was coming from the computer (the box under the feet of the passenger). So I tried a used and working computer, but same problem. I changed the secondary injectors too and still there. I must say that the problem is intermittent, sometimes when I reconnect the injector it works fine. Lately the problem got even worst, both secondary injectors got the same trouble. I don't know if a problem with a sensor could produce a dramatic impact like this on injector activation. So please if you have suggestion that could light me, let me know.
Thank you. :shakehead:
04-10-2002, 10:30 PM
#2
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Join Date: Aug 2001
Location: Pimp'n ain't E-Z! But driving ur FD makes it easier!
Posts: 2,705
Well, whats your compression? If you have low compression...that can cuase flooding. Also, the 3800RPMs skip is typical. You said you've had the car for 12 years...I'm guessing its got some wear and tear...and its probably loosing its compression. If all else fails, check the fuel pump and make sure its not getting the wrong signal to send more fuel early....
04-10-2002, 10:45 PM
#3
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Join Date: Apr 2002
Posts: 233
My compressions are good, it's over 90 psi and all even. It has only 140000 km and has always been well treated. How do you explain that it's running well when I disconnect the injectors? You should see the gas coming out of exaust pipe when I reconnect the secondary injectors.
04-12-2002, 11:21 AM
#4
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Join Date: Apr 2002
Posts: 233
I don't understand why the secondary injectors keep shooting fuel when they're not supposed to, at idle. If it's not in the wiring then it should be the ECU (computer)...what sensor or switch would cause this and leaving the primaries and ignition working fine? 
Somebody has any idea..
Somebody has any idea..
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