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VW MKIII-A3/B4 TDIs This is a discussion about MKIII-A3/MkIII Jetta/Golf (<99.5) and B4 Passats (96,97) TDI's. Non TDI related postings will be moved or removed.

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Old August 13th, 2012, 07:35   #1
1Bad87gn
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TDI(s): 1998 Jetta
Default 98 Jetta hard starting when cold

I have a 98 Jetta with 248,000 miles on it. Whenever it's moderately cold out it is hard to start, and the colder it is the harder it is to start even when I have cycled the glow plugs 4-6 times. It started just fine until I had the injection pump replaced. I have replaced the following parts:
Timing belt and associated parts, glow plugs and harness, glow plug relay, injector nozzles (Bozio nozzles). The only way it will start easily is plugging the block heater. I keep up on the maintenance religiously so I can't figure out why this problem continues to plauge me. Any help would be greatly appreciated.

Mike
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Old August 13th, 2012, 07:47   #2
bluesmoker
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Originally Posted by 1Bad87gn View Post
I have a 98 Jetta with 248,000 miles on it. Whenever it's moderately cold out it is hard to start, and the colder it is the harder it is to start even when I have cycled the glow plugs 4-6 times. It started just fine until I had the injection pump replaced. I have replaced the following parts:
Timing belt and associated parts, glow plugs and harness, glow plug relay, injector nozzles (Bozio nozzles). The only way it will start easily is plugging the block heater. I keep up on the maintenance religiously so I can't figure out why this problem continues to plauge me. Any help would be greatly appreciated.

Mike
check your static timing with vag com, it may be off
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Old August 13th, 2012, 08:05   #3
TonyJetta
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Originally Posted by bluesmoker View Post
check your static timing with vag com, it may be off
Agreed! I would bet it's retarded.

How long ago was the belt and pump changed?

Tony
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Old August 13th, 2012, 09:24   #4
1Bad87gn
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Thanks for the help, I took it to a shop today and I let the shop owner know what you'all said, and he also agrees.

Thanks for the help.
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Old August 16th, 2012, 09:45   #5
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I just ran a post a couple of weeks ago about replacing my injection pump and then the car would not start if cold. I had to disconnect the temp control sensor to start the car if it sat for a more than 4 hours. after much trouble shooting My solution was to replace the pump again.
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Old August 16th, 2012, 09:47   #6
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I am not suggesting you change the pump, just letting you know my outcome.
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Old August 16th, 2012, 10:50   #7
TonyJetta
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gps_tech,
Did you ever check the timing, before replacing the pump?

Tony
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