Starting issue after building engine

[sid94]

Originally Posted by jasonojordan

After discovering that you had the injector problem while flowtesting the injectors did you change your plugs to new plugs?

Also I am sure your tuner has already but make sure he has checked the flow tables and that there are no issues there from going from stock to the ID1000 injectors.

I did when I took out plugs to check them after I found injector was stuck open


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[FRS Justin]

Originally Posted by jasonojordan

After discovering that you had the injector problem while flowtesting the injectors did you change your plugs to new plugs?

Also I am sure your tuner has already but make sure he has checked the flow tables and that there are no issues there from going from stock to the ID1000 injectors.

BINGO stock setting on injectors with 1000id will definitely cause this.

[sid94]

Originally Posted by FRS Justin

BINGO stock setting on injectors with 1000id will definitely cause this.

I’ll ask James and see if he set it right and send him whatever kind of log I can



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[GsxrMe]

I'm sorry I thought I came to the understanding that you already had your new Port injectors scaled. Ya you can't just replace injectors with bigger 1s thinking they are drop in ready. If you have the Racerom add-on with your ecutek cal the injector CC setting is easy to adjust but James a good guy and he should be able to correct this with a few logs.

James left my tune unlocked so I just make my own minor changes now.

[sid94]

Originally Posted by GsxrMe

I'm sorry I thought I came to the understanding that you already had your new Port injectors scaled. Ya you can't just replace injectors with bigger 1s thinking they are drop in ready. If you have the Racerom add-on with your ecutek cal the injector CC setting is easy to adjust but James a good guy and he should be able to correct this with a few logs.

James left my tune unlocked so I just make my own minor changes now.

He sent me a base tune for my setup with those injectors and all. If that’s what you mean by scaled then yes they are. As for James super cool he’s been answering all questions he can but he’s just tuner so I don’t wanna bug him much. Says I was the first DI injector he’s ever seen stay stuck open lol


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[FRS Justin]

so you replaced one DI injector or the set? Their
are different injectors.

[sid94]

Originally Posted by FRS Justin

so you replaced one DI injector or the set? There are different injectors.

Just one made sure part number was the same along with the same big number stamped on the injector body when I received said injector

[sid94]

So I swapped plugs from back of the head to the front and then they switch cylinder 4 came back sooty like if it had combustion and cylinder 2 came back washed out with fuel. I checked my coils to see if I can see any cracks or obvious signs of failure and only this I can see is there’s a white something in all the connectors



[MENTION=147476]

@FRS Justin coils would normally throw a code but what if it doesn’t run long enough to register a misfire code??


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[FRS Justin]

Originally Posted by sid94

So I swapped plugs from back of the head to the front and then they switch cylinder 4 came back sooty like if it had combustion and cylinder 2 came back washed out with fuel. I checked my coils to see if I can see any cracks or obvious signs of failure and only this I can see is there’s a white something in all the connectors





@FRS Justin coils would normally throw a code but what if it doesn’t run long enough to register a misfire code??


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that's a grease to keep connections from corroding

[sid94]

Ok, any way to check coils? Besides putting screw driver in it and cranking?


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[wbradley]

Originally Posted by FRS Justin

that's a grease to keep connections from corroding

Dialectric grease.

Maybe a multimeter to test the coils firing?

[sid94]

Originally Posted by wbradley

Dialectric grease.



Maybe a multimeter to test the coils firing?

According to the service manual these coils can’t be resistance checked to determine wether good or bad. That was my first idea but it didn’t quite work out for me


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[Irace86.2.0]

Originally Posted by sid94

According to the service manual these coils can’t be resistance checked to determine wether good or bad. That was my first idea but it didn’t quite work out for me


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Can’t you check for spark by pulling the coil, pulling the spark plug and inserting it in the coil? Turn the engine over and see if you are getting spark. If not then swap spark plugs or swap a new plug and continue to isolate a plug problem versus a coil problem. Seems like if you have compression and if you have fueling confirmed (pressure, delivery and tune) then this is a spark issue.

Seems like if it was a MAF issue then every cylinder would be bad. Same if it was a fuel regulator or any other component that is not cylinder specific.

[wbradley]

Originally Posted by sid94

According to the service manual these coils can’t be resistance checked to determine wether good or bad. That was my first idea but it didn’t quite work out for me


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The normal procedure to determine a faulty coil when tuned. Can you flash to a base tune and see what faults it gets on an OBD2?

Or mechanically the coil outputs could be measured with probes for current or voltage, multimeter is useful if you know what you're looking for.

Fuel, ignition, mechanical. Did you leave a rag in the inlet? Piss in the fuel tank?