Hi,

I have:

VW Crafter CDI CR 2008

Recently, when trying to start from cold - the engine cranks and turns over, if it fails to fire then the speed of cranking reduces to nil after a couple of spins despite the key being held in the start position, then turning the ignition on and off, the engine then cranks and starts. If the engine is warm, this does not happen.

This seem to be increasing in regularity, about once every 4-5 cold starts now.

I had the starter off to replace the solenoid April last year, I have had my head under the engine to check the cabling to the solenoid have not undone, I must admit I have not checked the battery clamps.

I suspect the glow plugs need replacing, as starting takes a few cranks, its been like it since I bought it.

Any thoughts and ways of diagnosing this odd issue