Citroen relay 2.2 awkward to start when hot.

[Chris51]

Just had a recon engine in and van goes well.But sometimes awkward to start when hot.Good battery and starts straight away when cold.

 

[MC 55 FUN]

Just had a recon engine in and van goes well.But sometimes awkward to start when hot.Good battery and starts straight away when cold.

From Honest John :

Hot starting problems are virtually always a sign of lack of fuel pressure. Diesel loses its viscosity when it is hot and, combined with slow cranking speed the effect of leaks becomes noticeable.

Could be a simple air leak allowing air into the fuel system which gradually clears itself when the engine is at idle speed. check fuel filter/housing fit.

Next stop injector seals. If one of the injector seals is leaking the fuel rail will struggle to build pressure at cranking speed.

Then there's the worn HP fuel pump. Hot starting problems can be the first sign of a worn pump. Try the first two first.

Software issues could also cause this problem.

 

[Chris51]

Sorry for delay in answering am trying new starter motor firstt and will checkfor air leaks.

 

[Bmadmotors]

Sorry for delay in answering am trying new starter motor firstt and will checkfor air leaks.

Hi Chris did u ever sort out slow starting issue when engine is hot..my 2.2 boxer ford engine..
Like lazy stater when hot perfect when cold.any help appreciated tks

 

[Chris51]

Sorry for late reply...it was the starter motor....put new one on and it wizzed over.

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