Air in fuel

[mikeytar3]

Help!
I've looked in wiki but it doesn't help. My problem seems to be air getting in the diesel when left causing a lot of starter cranking before she goes. then all is fine untill I next stop, 10 minutes later the same problem. I thought it was probably the Thermo thingy on the filter so changed that and got an improvement for about a day and then back to problems. If I look at it while its running the feed pipe is full of diesel, but the return is full of what looks like foam. When I stop the engine i very quickly get bubbles coming out of the pump back down the feed line. Nowhere are there any out leaks.When going its fine. Ant ideas anyone?

[kit]

Tighten up all the fuel lines and use proper fuel clips not just jubilee clips then fit a non return valve inline and you will never get starting problems again

[Oldiebut goodie]

New seals needed on the injection pump. Suction side, therefore no diesel leak.

[mikeytar3]

Thanks for the idea's I was thinking non return valve and maybe fuel filter with only two connections so return line goes straight back to tank.

[kevtherev]

If you fix the seals then you won't have to do any of that

[KamperKev]

I had this problem for 3 years in my 1.7 KY diesel. I put a one way valve and a hand pump primer so i could re-pump diesel to the pump. I have removed it now as all along it was simply the little rubber tubes that goes from one diesel injector to the next 4 or 5 of them all together. The last injector has a little rubber end cap on it. All of mine were in a very sorry state and the end cap was all but perished and leaking diesel and hence letting air in back to the pump. You should be able to get a length of the tubing and a replacement cap from most good motor parts dealers ( so that eliminates Halfords lol ) . I remember reading somewhere that the additives in diesel these days has additives that play havoc with this tubing causing it to prematurely age and fail! probably only cost you a few £££ and you literally just cut it to length with scissors and it just push fits into place. Worth giving a go! Best of luck.

[mikeytar3]

new leak off pipes fitted 6 months ago and no diesel leaks so i guessthats not it. i'm reluctant to get involved with the pump, last time a rebuild cost me £400. Fitted the non return valve tonight so i'll find out if its any good tomorrow AM.

[Oldiebut goodie]

That will mask the symptoms but not cure the problem though.

[mikeytar3]

Started ok this morning so I guess i've masked the problem. this cost me £5 so I hope it saves the situation untill I can save up enough pennies to do a proper job.