new 12HT conversion, engine cut out

Footloose posted:

Clogged fuel filter ?

Nav 8 posted:

Also check the oil level in the sump as I am sure they have an low oil pressure cut out switch... Nav.

Graham & Lynne posted:

Also quick check if fuel problem will it start with aerostart.

Member - DOZER posted:

Sounds like the stop flap has closed...Id be making sure its open then crank the motor....low oil pressure automatically stops these motors, make sure you have the wire on the oil pressure switch....open the tank and try startng it with cap off, fuel bleeds, so that must be ok....there isnt much that can gop wrong with these limos...fuel and air....

rob_sheeds posted:

I think you guys are on the money with the stop valve.........although i and others noticed when i picked it up there was a green terminal (fixed on side of enigine)from the fuel pump side of the engine with nothing commected to it, which to me looks like the oil pressure cut out, but it ran fine without it??

Bout to trek up and take another look at it, never had a prob with a H motor that wasnt fuel/air before so thanks all for the advice will keep you all posted.

Cheers

Member - DOZER posted:

I cant remember now how the 12ht works with injection of fuel.....there is a motor that pushes a lever on the pump...this lever controls injected volume...if it is pulled back, it is at zero fuel, if it is pushed forward 100% it is 120% fuel (choke) and if it is 3/4 forward it is full fuel and working off the throttle position...but the butterfly is vacuum operated by a small electrical valve and vacuum from the vacuum tank. Maybe, youve lost vacuum, and therefore lost movement open of valve. Maybe your electric leg has stopped working, if so, disconnect it and manually give the pump 3/4, and i will start and run....all it wont do is stop with the key....dont use any aprt of your hand or body to choke it either,....u will end up in hospital.

rob_sheeds posted:

I looked at my bros 2h and the stop valve is different. The 12ht loos to haved a valve or manual stop valve coming out the side of the fuel pump. This is what i assumed was the fuel problem of it not opening/ moving when power goes to it.

I had someone click acc, then start it and it didnt move. i pushed it forward and tried starting it and thsi time there was no fire at all whereas before there was fire then cut out.

Im beginning to think that the oil pressure is the problem as i remember noticing that the oil pressure guage nevermoved up when revving from idle like my old 2H and another 2H i just looked at. I have tried looking in my manual and all over the net for a pic of where the switch comes out of the engine as there is one there that is green and has nothing connected to it. its just down and left of the fuel pump and inbetween what looks to be the oil pressure sender unit.

Also the guage never sat very high up towards high pressure.??

Thanks for the replies so far. Shouldve sold it and bought an imported 60 Sahara. Any more thoughts?

Member - DOZER posted:

Rob, if pushing it forward, you get nothing, thats the way it goes when the key is turned off, push it the other way will give it choke.... make sure the butterfly on the inlet manifold is open, if it isnt remove it or manualise it with wire......u van also wire up the side lever on the pump to pull in the cabin to start..... use a piece of wood to choke the motor to stall if need be...lastly, look for a broken fuseable link on battery or fused wire or tripped circuit breaker that would stop the motor from moving the lever on the pump.....it must be that that is stopping it starting....last option is a can of Start ya bastard) to get it going....

Member - Davoe (Nullagine) posted:

Guys the 2h has the manuel stop lever controlled by the edic motor, the 12ht is completley different using a shutoff solonoid

rob_sheeds posted:

Hi all
turns out i fiddled with a fuse they had wired in which must have been the edic / fuel solenoid or something and it runs a bit longer so thats the problem and i will have to solder it with an inline fuse.

Thanks for all the replies.
Rob