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View Full Version : KA dumping mass amoutnts of fuel


DanDriftS13
03-02-2009, 12:45 PM
I have a S13 hatch with a dual cam ka in it. I had an SR in my car and when it blew up I decided to pick up a KA for cheap and drop it in for the time being.

I got an obd2 ka and converted it back to obd1 and dropped it in my car. The motor has all emissions deleted off of it and ran ok for about a month then the MAF died. So I put a stock S13 SR maf onto it that I had laying around and when I did that the car just started to dump mass amounts of fuel into the motor and is blowing black smoke out the exhaust at all rpms on or off throttle. I drove it around for a lil bit to see if the problem would correct itself. I drove about 30 miles and killed 1/4 tank of gas with no change to what the car was doing. I returned home and decided to put the old MAF back and nothing changed. Even with the old broken MAF the car was still dumping fuel so I put the SR MAF back on. I am running a Walboro fuel pump and an adjustable fpr. Right now the fuel pressure is set down to about 20lbs at idle. So far I have changed the O2 sensor and needed to replace the ignition coil as it died and the car was getting no spark at all. Still no change in the preformance of the motor.

I am going to try to get another MAF that I can try as well as borrow and ECU from a friend to see if either of those could be the problem. Other than that I'm not really sure what it could be so any help will be appreciated.

Thank You
-Daniel

Sileighty_85
03-02-2009, 01:08 PM
KA DOHC MAF and SR MAF are not the SAME!!

SOHC KA MAF and SR MAF are the same

get the correct KA MAF

DanDriftS13
03-02-2009, 01:10 PM
KA DOHC MAF and SR MAF are not the SAME!!

SOHC MAF and SR MAF are the same

get the correct KA MAF

Ok I did not know that I will definitely do that then thank you.

zugoi
03-02-2009, 01:18 PM
You could put a turbo on there and add mass amounts of air to even it out :keke:

DanDriftS13
03-02-2009, 10:06 PM
You could put a turbo on there and add mass amounts of air to even it out :keke:

That thought had actually crossed my mind a couple of times lol

kamikazekid
03-02-2009, 10:17 PM
I second the MAF conclusion, nice work.

DanDriftS13
03-03-2009, 12:02 PM
I second the MAF conclusion, nice work.

Well I got a new dual cam MAF this morning and put it on. The idle of the motor has leaned out but under throttle the car still blows a thick cloud of black smoke out the exhaust and feels like it has lost a lot of power.

Any other ideas?

drifterken
03-07-2009, 11:50 AM
i'd say turn down ur fuel alil more. just cuhs ur using a the 255 pump.

holemilk00
03-07-2009, 11:53 AM
There are two temp sensors, one for the gauge cluster and one for the ECU, if the one for the ECU is gone then the car will dump fuel to try to warm the car up. Check that.