w124 Difficult to start when warm?

[badshot1uk]

Hi all,


As above really, Ive only had the old girl a week or two and shes consistantly got worse starting when warm, shes spot on when cold but crap (2 or 3 attempts) when shes warm'ish.

Any ideas as Im useless with cars useless!

Cheers

Paul

 

[grober]

If you have the old BOSCH jetronic K system then it may be your warm up regulator or if its the later K-E SYSTEM then maybe your engine coolant temperature sensor is bust or disconnected. Other possibility is an inlet manifold leak.

 

[Dieselman]

Could be a vapour lock caused by low fuel pressure. iirc there is a one way valve near the fuel pump that can fail so losed pressure.