Vivaro fuel problem.
Discussion
Hi guys. I wonder if anyone can throw up some ideas on this one for me?
I have a Vauxhall Vivaro 1.9 on a 2006 plate with no fuel pressure at the main feed pipe from the pump. I've just changed the Bosch high pressure pump for a recon Bosch one (which relieved me of £400) and still have no fuel pressure at the main inlet on the rail. I've checked the timing which is spot on, new pump and still it won't pump fuel. I bled the fuel system and there is pressure on the hand pump at the filter and no bubbles in the feed pipe going into the pump. There is fuel at the rail where the main feed pipe goes in but nowhere near as much pressure as there should be.
Just throwing this one out here, I did have the same problem a few years back with a Fiat Scudo which has a very similar (looking) pump from memory which was showing similar symptoms and turned out to be a dodgy starter motor that was causing a drain in the electric circuit at cranking even though it was strong enough to turn the engine over. In that case I sent the Fiat to the helpful chaps at Thames Valley Electro Diesels in Reading who said the short in the starter was enough to wipe out the signal for the high pressure pump. They changed the starter and that was that. Is this the same fault and has anyone else had the same problem????
I have checked the voltage at time of cranking and although the battery is holding 12.5v, it drops at cranking and there's a spark from the positive terminal when I crank it over, which of course would happen if either the starter is faulty and or the battery has fused inside itself.
Any help or ideas on this would be greatly appreciated as it's getting on my tits now and I'm no closer to curing it.
I have a Vauxhall Vivaro 1.9 on a 2006 plate with no fuel pressure at the main feed pipe from the pump. I've just changed the Bosch high pressure pump for a recon Bosch one (which relieved me of £400) and still have no fuel pressure at the main inlet on the rail. I've checked the timing which is spot on, new pump and still it won't pump fuel. I bled the fuel system and there is pressure on the hand pump at the filter and no bubbles in the feed pipe going into the pump. There is fuel at the rail where the main feed pipe goes in but nowhere near as much pressure as there should be.
Just throwing this one out here, I did have the same problem a few years back with a Fiat Scudo which has a very similar (looking) pump from memory which was showing similar symptoms and turned out to be a dodgy starter motor that was causing a drain in the electric circuit at cranking even though it was strong enough to turn the engine over. In that case I sent the Fiat to the helpful chaps at Thames Valley Electro Diesels in Reading who said the short in the starter was enough to wipe out the signal for the high pressure pump. They changed the starter and that was that. Is this the same fault and has anyone else had the same problem????
I have checked the voltage at time of cranking and although the battery is holding 12.5v, it drops at cranking and there's a spark from the positive terminal when I crank it over, which of course would happen if either the starter is faulty and or the battery has fused inside itself.
Any help or ideas on this would be greatly appreciated as it's getting on my tits now and I'm no closer to curing it.
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