Vehicle & Technical > Defender
stage 1 v8 wont start.
muddyjames:
when you say set the leads? We have put them in the right orderand and found top dead centre and set them from there.
Timing we are not sure how to do.
Carbs. We havent touched those.
There are 2 silver dome things on the top of the engine next to the air intake and they both have black knobs you undo and it has a dip stick type thing inside. they were empty of oil so we filled them up. dont know if they are the carbs.
thermidorthelobster:
--- Quote from: "muddyjames" ---There are 2 silver dome things on the top of the engine next to the air intake and they both have black knobs you undo and it has a dip stick type thing inside. they were empty of oil so we filled them up. dont know if they are the carbs.
--- End quote ---
They'll be the carbs. The bit you're looking at is the oil damper chamber which damps the needle. You'll probably have a bit of vac hose going to the top of each chamber - this is a system which sucks the needle and piston out of the way of the airflow when you're running on LPG. Running on LPG for a long time will suck all the oil out of the damper, leading to problems running on Unleaded, so you were right to fill them up (pump them a few times to make sure you have hydraulic pressure, too) but this shouldn't affect running on LPG.
Can you smell LPG when turning over? Are you sure you have LPG in the tanks? (Don't go by the dashboard, as they're always inaccurate.) Can you hear the solenoids on the tanks pinging when you initially turn the ignition on, to signify that the valves on the tanks have opened? Also check the vacuum hoses to see if anything has become disconnected; some of the LPG paraphernalia will depend on that.
I'd suggest you stick some petrol in the tanks (even if they're leaking) and try running on Unleaded. If it runs fine then the problem is down to the LPG system, or possibly the timing. If it doesn't, then you have ruled out one problem.
So do you have a good strong spark from the plugs (earthed to the block) when turning over?
muddyjames:
Quote and my answers in together.
They'll be the carbs. The bit you're looking at is the oil damper chamber which damps the needle. You'll probably have a bit of vac hose going to the top of each chamber - this is a system which sucks the needle and piston out of the way of the airflow when you're running on LPG. Running on LPG for a long time will suck all the oil out of the damper, leading to problems running on Unleaded, so you were right to fill them up (pump them a few times to make sure you have hydraulic pressure, too) but this shouldn't affect running on LPG.
It did require some effort to push the tops back on again once we filled them up with oil.
Can you smell LPG when turning over? Yes we can smell gas and also we took off the pipe from the air filter box and we saw gas coming out. It was cold out side and in torch light the light went hazey as the gas came through. Can you hear the solenoids on the tanks pinging when you initially turn the ignition on, to signify that the valves on the tanks have opened? Also check the vacuum hoses to see if anything has become disconnected; some of the LPG paraphernalia will depend on that.
We cant see any disconnected hoses. I wouldnt know what the sound of a solonoids pinging would sound like but as there is always gas coming through I would guess they are.
I'd suggest you stick some petrol in the tanks (even if they're leaking) and try running on Unleaded. If it runs fine then the problem is down to the LPG system, or possibly the timing. If it doesn't, then you have ruled out one problem.
We were thinking of taking the hose off the tank and sticking it straight into a jerry can and try it.
So do you have a good strong spark from the plugs (earthed to the block) when turning over?
We have a spark when earthed to the block. I don't know what a strong spark looks like but there was certainly a spark jumping accross the plug.
MuddyMike:
How old is theLPG conversion? I ask because eventually the vaporiser needs cleaning out and posibly a new diaphram fitting.
Mike
muddyjames:
my mate bought the landy about a year ago and I think he bought it just after the previous owner had just rebuilt the landy so I am guessing 12 months to 18 months.
Navigation
[0] Message Index
[*] Previous page
Go to full version