Poor Cold Start 110 Tdi

[dulux72]

I wonder if anyone can shed light on this ?

I have a 99 110 tdi Sharan. When the car is first started in the morning it will take 3 to 4 seconds before firing. This has only recently been happening. The temperature outside makes no difference.

Once the car has been started for the first time it then restarts immediately for the rest of that days use no matter how many times the car is restarted.

I have replaced the glow plugs to no effect and wonder if I'm missing something else.

[ridway]

Your problem sounds remarkably like a fault I had with a 205 peugeot a few years ago. New glow plugs made no difference whatsoever.

 

I found the fault was in the diesel feed pipe to the HP pump, a minute leak was allowing air to be drawn in when the car had been stood for any length of time. Trying to start the car would always prove difficult until the air had been purged out of the feed and return system. Just like your car I would have no problems during the rest of the day.

 

I had learnt to live with the problem for a couple of years until the leak developed and I could smell and see diesel on the drive after parking up for a while. Replacing the pipe, purely for this reason, I was quite chuffed when it also cured the starting problem!

 

Suggest you have a really close look for cracked pipes or perished rubber pipes used in the fuel feed system and any evidence of diesel leaks, however small. Best of look.

 

Rich

[dulux72]

Thanks Rich

 

I'll have a good look at the weekend and let you know how I get on.

It's been driving me mad for about 4 weeks lol

 

Cheers