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Old 05-19-2020, 09:45 AM   #1
Vtwrx04
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Default 06 wrx no start after TGV delete

I have searched quite a bit and haven't found the answer yet. I finished my TGV delete and when I tried to start the car it fired up, ran really rough (not all cylinders) then died and won't restart. I just pulled all the sparkplugs and checked for spark. Both front coils (white clips) had a spark and were dry while the two rear (black clips) had no spark and were wet. I've checked grounds and they seem good. Are the rears on a different circuit,? No error codes on my AP.
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Old 05-19-2020, 09:59 AM   #2
Samurai Jack
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Those rear igniter connections should not be wet.

Pull igniters and plugs.
Check plugs

What condition are the plugs in?

Clean & dry everything off
Put everything back together and re-start.
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Old 05-19-2020, 10:17 AM   #3
Vtwrx04
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Sorry if I didn't communicate it correctly. The rear plugs were wet, not the connectors. I assume they were wet due to no spark.
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Old 05-19-2020, 10:46 AM   #4
dangerousatom
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Are your grounds that attached to the TGV bolts attached ? Those are the grounds for everything feeding from the harness attached to the intake manifold ..... coils.
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Old 05-19-2020, 11:11 AM   #5
Vtwrx04
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yes ,both are attached and I checked continuity to the block. I would have thought a bad ground would effect all cylinders, not just the rear.
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Old 05-19-2020, 02:13 PM   #6
Vtwrx04
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Still perplexed. I ran additional ground wires from the manifold to the transmission just for the heck of it. I have swapped spark plugs and swapped coils. Still no spark on rear cylinders. I checked and have 12v to the connector to the coil and the middle pin goes to ground, so it seems its a triggering issue. Not sure how to test the third wire If it was a bad crankshaft or cam sensor I would have thought there would be no spark at all four plugs. I'm running out of ideas.
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Old 05-19-2020, 03:08 PM   #7
Samurai Jack
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I would start by reviewing your whole install process and closely check everything.

You may have shorted a wire, broke a connector or any manner of a number of other things.

Usually, one finds something silly they did during the review and then all is good again.
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Old 05-19-2020, 03:29 PM   #8
Vtwrx04
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Yeah, at this point I'm thinking of pulling the manifold and engine harness back off and starting over. Still baffled as to why the front plugs fire, but not the rear. And why no error codes on my AP? I wonder if it an ECU problem?

Last edited by Vtwrx04; 05-19-2020 at 03:47 PM.
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Old 05-19-2020, 06:09 PM   #9
Haevn
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make sure the main harness plug is plugged in all the way and no bent pins, when i did my tgv and air pump delete my main plug wasn't plugged in all the way and car would just click when trying to start lol
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Old 05-20-2020, 02:16 AM   #10
bobjr94
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One easy thing to do is swap the fuel pressure and return lines on the manifold. I did that once and it wouldn't start. But I think the motor go no fuel, sounds like yours is flooding out. Did you have any injectors out ? A seal may have been damaged and is leaking fuel into the motor.

Also, the front and rear coil connectors or injector plugs are not swapped, front and rear ?
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Old 05-20-2020, 08:18 AM   #11
Vtwrx04
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fuel lines are correct. Top is fuel inlet, middle is return, bottom is evap. I need to double check the fuel pressure regulator to see if I didn't connect it correctly. Next is getting a fuel pressure gauge and checking pressure, but I don't see why I could have done anything that would have effected that.
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Old 05-21-2020, 10:33 AM   #12
Vtwrx04
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progress update. I pulled the fuel pump and found a wire disconnected. Reconnected and was able to start the car with holding the gas pedal to the floor. I was able to keep it running with some throttle, but it was popping and crackling. It must have also shot some flames out as a piece of cardboard behind the car caught on fire, Yikes!. I should mention that I also just upgraded my injectors to ID1000's and loaded a new MAP file. No codes showing on my AP. Any suggestions what to check next?
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