OK changed injectors they are correct ones changed glows changed diesel filter and did bit service truck runs sweet when I can get it to start she turns over fine but just won't start from cold been primed and no air in system but just seem when it is cold it won't fire up

Any advice should be greatful

what glow plugs did u use what truck

2005 K74 L200 4 life glows came from millners not sure what they are

are the glow plugs working

They got power tested that

Is there any fuel pump or relay or solnoid I should look at ?? Glows have power not sure how else to test them

You can take them out and hook them straight to a battery - hold them with a pair of pliers as they will get hot very quickly if working. You can also check them in-situ with multimeter - take off the buzz rail that connects them and measure the resistance from the body of the plug to the thread on the top - should be around 0.7Ohms I think. Was this problem occurring before you made the changes you talk about?

No truck was fine just had to give i couple warm up turn of key but it was running bit sluggy now runs lovely but can get her started

No truck was fine just had to give i couple warm up turn of key but it was running bit sluggy now runs lovely but can get her started

Hate to be harsh, but it's almost certainly something you've done that has caused this problem, so I wouldn't start out looking for anything new that has magically gone wrong at the exact same time you've done the work.

Have you used a Milner's Boshi filter? If so I would bet @123hotchef 's right arm that is the problem. Get a better one and your problems might just go away - Mahle fuel filters work for me ok. https://www.opieoils.co.uk/f/100261/1889...uel-filter.aspx

I would test the old glow-plugs and if they're working put them back in. Just connect a wire to the negative terminal of the battery and wrap it round the main body of the plug, then hold the plug (with pliers) and touch the threaded end (with a nut on it) against the positive terminal of the battery. If they're the originals, I'll bet they are better than the ones you just put in...

Good luck.

@Heathen What's wrong with the boshi filters

From what I've read your truck needed a couple of lots of heat before you replaced everything, I had an issue with my glow plug relay a while back , it would show 12 volts at the buzz bar but starting was awful, stripped relay and found internal terminals burnt to a crisp , replaced relay in the end .
As has been said double check everything you have done , it's easy to damage the o ring on the diesel filter if they weren't lubed when you tightened it up and any small amount of air would slow starting while it cleared

@AD - I've always had a problem getting them to seal properly with the filter housing, so they let in air. Other people have said the quality of the internal filter bit is rubbish too, but I can't really comment on this.

Ok guy alot to take on im going to strip it all out at weekend check it all and try some quailty parts fingers crossed thanks for advice will let you know

Ok guy alot to take on im going to strip it all out at weekend check it all and try some quailty parts fingers crossed thanks for advice will let you know