VWDiesel.net The IDI, TDI, and mTDI source.

Engine Specific Info and Questions => IDI Engine => Topic started by: skifree on July 13, 2008, 07:49:35 am

Title: 1.6 won't start when warm
Post by: skifree on July 13, 2008, 07:49:35 am
My tired 1.6 starts right up when cold all new glow plugs.If I shut it off, it will still start back up, but if it sits for a while and is still warm the glow plugs won't come on and it won't start. The battery is fresh. Has any one put a over ride switch for the glow plugs? Or is there another solution other than a rebuild?
Title: 1.6 won't start when warm
Post by: burn_your_money on July 13, 2008, 11:27:45 am
Check your cables to and from the starter. I had the same problem and it was bad wires
Title: 1.6 won't start when warm
Post by: skifree on July 13, 2008, 11:46:45 am
The engine turns over,but it won't start when warm without the glow plugs
Title: 1.6 won't start when warm
Post by: Vanagoner on July 13, 2008, 12:03:48 pm
I have had that same problem- my compression is a bit low I think.  
   My solution was to pull the wire off of the coolant temperature sensor near the head which goes to the glow plug circuit.  the plugs will then glow as long as you want, every time.  they go off after you turn the starter.
Title: 1.6 won't start when warm
Post by: bert on July 13, 2008, 12:48:45 pm
as above  :wink:
Bert
Title: 1.6 won't start when warm
Post by: skifree on July 13, 2008, 01:51:41 pm
Thanks for the help. That will help me till I put my rebuilt 1.6td replacement.
Title: 1.6 won't start when warm
Post by: Dr. Diesel on July 13, 2008, 03:51:30 pm
I accidentally SLIGHTLY bent all the intake valves in my first TD engine while monkeying with cam timing. Started great cold, but wouldn't start hot.
Title: 1.6 won't start when warm
Post by: skifree on July 13, 2008, 04:38:44 pm
I set the timing to .88 mm and have been leaving the cold start on all the time (cable sticks) is this ok? Started warm same way, when cold start was off.Does any one know how much the cold start advances the timing?
Title: IP cold start advance
Post by: AndyBees on July 13, 2008, 06:11:24 pm
If I remember correctly, the cold start advance advances the timing 2.5 degrees.

And, it doesn't hurt to leave it pulled out.  As I remember, the pump overrides the advance internally at speed.

I have my pump "advanced" externally at the mounting bracket by about 2 degrees.......engine "whacks" a little louder at idle.
Title: Re: IP cold start advance
Post by: burn_your_money on July 13, 2008, 06:13:31 pm
Quote from: "AndyBees"

And, it doesn't hurt to leave it pulled out.  As I remember, the pump overrides the advance internally at speed..


You will wear out the advance piston with time, especially if you sit at idle or low RPM a lot when the advance is not taking over