SDI dont wanna start

jameson

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Joined
Mar 8, 2019
Messages
80
Location
Kent
Ive found now; not sure how, that if depress the accelerator pedal a bit before cranking, and hold it there while cranking; then it starts up no problem atall, even first thing on a cold morning ! It's been like that now for 3 days and that's without fitting the check valve ! I've no idea what that means mechanically ? Anyone have any ideas ??
 

Crasher

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Apr 22, 2006
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27,663
Location
Nottingham, England
Yes, it is the most common cause of poor diesel starting, the speed MUST exceed 280rpm for it to start. A quick and dirty test its to start it with the temp sender disconnected, if it is better, the rpm is likely to be too low. Remember this will store a fault code.
 

jameson

Member
Joined
Mar 8, 2019
Messages
80
Location
Kent
Yes, it is the most common cause of poor diesel starting, the speed MUST exceed 280rpm for it to start. A quick and dirty test its to start it with the temp sender disconnected, if it is better, the rpm is likely to be too low. Remember this will store a fault code.
Is this the air pressure/temperature sensor located on the air ducting ?
 

jameson

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Joined
Mar 8, 2019
Messages
80
Location
Kent
Well I removed the coolant temp sensor connector plug (pita that is, only need to push with your thumb on the 1 tab thing and it slides out), and low and behold it did start. Not only did it start but it started (although it was a bit grumbly) after it had been sitting for two days/nights, and on the first turn of the key without my foot on the gas pedal ! So I'm pleased about that. So Crasher, you rekon I need to change the starter motor now ?
 

jameson

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Joined
Mar 8, 2019
Messages
80
Location
Kent
Just to update, I fitted a new Lucas starter motor last week and the van has started on the button ever since. Thanks for the info Crasher its solved my problem; great stuff !
 
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