intermitent starting problem - diesel
 

I have stated to get intermittent starting problems on my diesel 75. It has done 152k miles. It had the injectors done at 80k miles but is on its original fuel pumps and camshaft sensor. It used to always start first time, but now it sometimes needs two or three goes. You can hear the under bonnet fuel pump priming when the key is first turned, I am not sure if it is making more noise than it used to - it may be me just getting.g paranoid.

My first guess is the camshaft sensor, then may be the under bonnet fuel pump or fuel prtailessure sensor. It does it with a hot or cold engine. Should I just replace the camshaft sensor first to eliminate that first. Where is a good place to source one from if I do replace it?

Sounds like it maybe Injector leakback.

I would start with doing a leakback test.

I concur......