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if i leave my n reg vw t4 for a while the diesel retuns to the tank and takes ages to start again but if its been runnin it starts ok unless left for more than 15 mins any idea how can i resolve this problem
 

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my M reg 1.9 diesel did a similar thing, i traced it to the 80amp fuse for the glowplugs, it had corroded. it's located under the bonnet to the left of the engine bay. 54 pence from VW main agent.
 

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sc vw customs 1.9tdi convert
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mine had the same prob,turned out to be a air leak in the throttle body on top of the pump,shaft and bush needed replacing,never leaked full til the end,but enough to leak air,check where you throttle cable connects to the top of the pump,if there is play and you can move about,might be this,dont move to much though,could unseat the washer and bush and will start to :* out diesel......

good luck mate,took me while to source and sort my starting prob.:ILU:
 
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