Ford Transit USA Forum - View Single Post - Webasto Air Top 2000 STC PETROL (GASOLINE) won't start
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post #3 of (permalink) Old 01-06-2017, 10:15:AM Thread Starter
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I spent most of my spare time running tests on my heater this week…

I have eliminated these potential source:
1) Out of gas
2) Bad gas
3) Air Bubbles
4) Clogged exhaust or intake

I am left with these observations:
1) The heater will start when cold (i.e. sitting overnight) but will not start when warm.
2) When warm, the only way to start the heater is to drain the fuel line (by disconnecting the line from the pump and letting the gas escape, then re-connect the pump). If the fuel line is empty when attempting a start, the heater will fire-up.
3) When warm and attempting to start the heater with a primed fuel line, the combustion will fire-up only during the abort sequence (but the heater still shut-down because the abort sequence has already started).

TechWebasto tried to help, but they have no clue and suggested to visit a Webasto Technician.

I found out that the “STC” unit I bought from U.K. is not sold in America, so technicians are reluctant to work on it. “STC” (European) vs “ST”: the pump, electrical harness and control unit are different; it uses different running and start parameters.
If my local technician is not able to help, I will have to send the heater back to UK for diagnostic.

This no-start issue is just weird… I don’t get the logic behind that behavior…

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