2G flooding injectors

[GloriousDSM]

Seeing If I can get some help or ideas to get my car started.

Car won't start and the first two injectors are flooding, closest to the cam gears.


All the injectors are working proper.
Has spark on all plugs. Gaps are proper.
Timing has been checked and is good.

Maybe it is an injector pulse issue.

650's and no compensation after moving up from 450's too.

Car tries to turn over but just dumps fuel. Any ideas?

 

[rlacasse1]

Are the injectors stuck open (bad)

 

[GloriousDSM]

no, they are brand new sir

 

[born2tune]

ok, i had the same problem which its not doing it anymore, but my problem consisted of:

didnt want to start but it kept sending fuel till it smells like it poured all over the car and i let it sit for hours tried again and almost started but immedietly flooded again, poped out the spark plugs and its a pool of fuel, i let it dry in the open, then it almost started and flooded again, so as a ghetto fix i pinched the fuel line with a pressure grip and it started immediately, then after i started it i went and took it off letting fuel go thru and i guess the ecu relearned the ratios and im fine again ever since, quick fix i would think. get back to me if you try this and let me know how it went with you.

 

[GloriousDSM]

Nice, ill try that tomorrow. But I forgot to mention the car has never been turned on since the rebuild. Not sure if that matters though.

Battery is new.
Alternator is new
starter is new

 

[matt98eclipse]

Wow guys crazy but im thinkin i have the same issue. I try and start my car wont start as soon as i give it some gas it wants to run for a couple sec. Smells like gas really bad out the exhaust pipe. My car also has zero miles on new motor. Car ran great with my old 680's sold those and installed brand new 1150s and everysince car doesnt wanna run now!!

Thanks born2tune i will be give your what you said a shot too and see what happens.

 

[cabbageman97]

FPR? It is possible that the PCM isn't compensating for the larger injectors? Thats what it sounds like. And because it's just starting up, it would be operating in open loop mode. So the computer won't compensate for what all the sensors are reading. It just goes off of pre-programmed parameters and doesn't realize 1000cc injectors dump more fuel than 600cc injectors since its not warmed up, so it hasn't had the chance to re-learn the fuel trims

 

[GloriousDSM]

and I have 650's and no compensation from moving up from 450's, I guess ill install the management and try again.

thanks guys, ill keep ya posted.

 

[twdorris]

Are you running a stock ECU?

If you're running a '95 or '96 ECU in a car without a '95/'96 style cam angle sensor, then you must also swap the plugs wires around.

Thomas Dorris

 

[donniekak]

Wow i can't believe no one is catching this. You can't just put 650's in a car with no fuel tuning capabilities. This is what happens.

 

[twdorris]

You can't just put 650's in a car with no fuel tuning capabilities. This is what happens.

We start our shop car with Denso 660s on stock ECUs all the time, which is why I didn't really consider the 650 swap to be key here. It should start and basically run, although poorly of course.

Thomas Dorris

 

[GloriousDSM]

i see, The ecu is the stock 98 gst one.

 

[GloriousDSM]

so it looks like Im not getting injector pulse on the last 2 injectors, has anybody else ever had this problem?