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General VW Discussion This is a place for General VW topics (the company, not your vehicle). General topics about a specific vehicle should be posted in the General TDI Dicussion Forum sections for that vehicle platform. A4, A3 & B4, B5, etc.

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Old October 27th, 2019, 06:31   #16
Dukchunter
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Was even all the way across. Hades a ring of carbon 1/2" wide and a 1/8" thick built up on basically the head gasket extending into the cynlinder

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Old October 27th, 2019, 09:39   #17
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That’s a good sign. N75’s tend to fail slowly sometimes, and actuators tend to rust internally fouling the N75. May want scrutinize those two, good investments at this point. Something choked it, if you ruled out everything in the vnt mechanism, they’re both likely culprits. Welcome to the rabbit hole!
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Old October 29th, 2019, 08:52   #18
Dukchunter
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Head all cleaned up. All injectors were failing one was not closing at all. Got them all back from rebuild. Head bolts and gaskets on the way. Also ordered n75 and the actuator was cleaned. Little to no rust. This car is clean rust wise. So once I get that I'll be throwing it back together. Fingers crossed I get it all right lol.

Any one have a link to torque specs? I'm sure there is a sticky here i can search for.

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Old November 2nd, 2019, 10:24   #19
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So here we are reassembly day. Here it is before anything torqued down. Somebody scream if I got it wrong before I torque it down

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Old November 3rd, 2019, 12:08   #20
Dukchunter
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So back together. New rebuilt injectors installed everything primed finally got it started. Smoked like crazy cold but cleared up mostly once warm. Idles like a champ..... the bad....
You go to give it any juice is misses and smokes like crazy. I did however pull 2 codes
P0102 mass air flow
P0252 injunction pump something or another
Drove mile down the road after idleing for 30 min and sucked fuel line dry from fuel filter.

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Old November 10th, 2019, 07:30   #21
jmodge
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What did you ever find here? Did your filter go dry also?
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Old November 10th, 2019, 08:11   #22
Dukchunter
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I gave not fooled with it yet. Waiting on a used injection pump to swap in.

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Old November 10th, 2019, 09:27   #23
jmodge
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For some reason my phone won’t copy a link. Google ALH TDI fuel sender check valve. May not be your problem, but an excellent cold climate mod, drilling out that check valve. Leak in the feed line or at the filter is a possibility also. But you could plug the fuel line while the sender is out and hook a vacuum pump to the other end under the hood to check for a leak.
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Old November 10th, 2019, 09:44   #24
Dukchunter
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I will check it out. Thanks! I did run the car on an auxiliary tank connected to the IP with an inline filter and it still ran terrible at anything more than idle. I also noticed the IP clicks very loud when turning motor by hand. After some research and with the code present ive found that these are tell tale signs of a failing pump.

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Old November 15th, 2019, 13:31   #25
Dukchunter
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Problem solved. New injection pump and new vacuum pump and car runs like a champ. Just need a new coolant temp sensor so glow plugs work right and get someone to to fine tune the timing with vcds.

Had a tiny puff off smoke upon start up and get a puff of smoke when accelerating hard but other than that she runs great.

Thank to all those who helped

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