[Simon Gerrard]

That's not good.
Sounds like you have a blockage in the vacuum system or the micro filter in the tank is bunged up with rubbish. Try revving it up and put a cloth into the vac inlet and see if it arrives in the tank or gets stuck, probably where the suction line joins the tank. Failing that you've got a faulty vac gauge.
A blockage would certainly explain the overheating issue but with it you would have higher than normal fuel consumption as the engine is working harder than normal to fight the restriction in the suction system and hence overheating which really isn't good.

Simon

[Paul Moss]

Gareth I will call and explain how to solve your problem.

[Gareth H Davies]

Thanks for the call Paul. I got new filter as old one was nakerd from previous owner not maintaining it! and also got some wd on the valve you mentioned. It has made a big difference however after using it on a job when I switch engine off the HG gauge is still reading around -4 and takes a few hours to return to zero :-(

[Gareth H Davies]

I removed gauge and still stayed at -4

[clive ware]

Gareth - why dont you just take it to either Woodbridge or gp cleaners in Cheltenham which would be nearer to you. I`m sure they`d be able to sort out any probs pretty quickly.

[Gareth H Davies]

already booked in for service etc at GP Cleaners for end of next week but was a long wait with xmas etc as i contacted them in December to book it in.