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Sept 16, 2018 21:22:28 GMT
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i had an SD1 V8 engine where the fuel pump was connected to the starter solenoid contact which normally bypasses the ignition resistor. There was a second power connection to the fuel pump which came from the oil pressure sensor. The sensor had 3 connections and 1 gave power to the fuel pump when there was oil pressure. I do not suppose this is identical to your set up but you never know. If the oil pressure sensor was damaged and therefore the pump would only get power when using the starter
Peter
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ivangt6
Part of things
Posts: 776
Club RR Member Number: 132
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Range Rover Classicivangt6
@ivangt6
Club Retro Rides Member 132
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Sept 16, 2018 21:35:42 GMT
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i had an SD1 V8 engine where the fuel pump was connected to the starter solenoid contact which normally bypasses the ignition resistor. There was a second power connection to the fuel pump which came from the oil pressure sensor. The sensor had 3 connections and 1 gave power to the fuel pump when there was oil pressure. I do not suppose this is identical to your set up but you never know. If the oil pressure sensor was damaged and therefore the pump would only get power when using the starter Peter Peter if it was an injection car then it would have been flapper like my range rover. The thing isn't firing properly whether using the starter or if it runs long enough to run by itself. Its a problem which is getting worse the longer I play with it. I think the other week when it was nearly empty it might have sucked up some crud from the bottom of the tank which has either blocked the pump filter or damaged the pump. I have a new pump on its way so will drop the tank and have a look inside. Ivan |
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1979 Mini 1000
1972 Triumph GT6
2007 VW Golf GTi
1979 VW T25 Leisuredrive
1988 Range Rover Vogue SE
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ivangt6
Part of things
Posts: 776
Club RR Member Number: 132
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Range Rover Classicivangt6
@ivangt6
Club Retro Rides Member 132
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Sept 18, 2018 23:48:13 GMT
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Day 2 of non-starting issue New pump arrived today so whipped the tank out. I emptied a good quarter of a tank of old fuel out. 5 jerrycans worth so about 25 litres. It was brown, mirky and didn't smell very strongly of fuel. Come to think about it I've only added a couple of jerry cans to what was in it when I got the car in Jan so have no idea how old the majority of the fuel is.  Old pump out  The tank is very good inside  And that's about where I forgot to take any more photos, but all that happened is I fitted the new pump, painted the tank and newly accessible bits of boot floor and chassis with waxoil and then refitted the tank. filtered the old fuel and chucked it back in as I didn't have time to go to the petrol station. And it has the exact same fault as it had before. Starts rough and then stumbles into a stall. Chucked a known good set of plugs, new leads I had laying about and the old coil at it and still no change. Still, I've ruled out most of the ignition components out and also the fuel pump. I have noticed I don't have a oil pressure light before engine start but pretty sure that was working the other week so probably just a bulb. I'll check that tomorrow. I may have stumbled on the fault with the old fuel. I'll drain it all back out tomorrow and stick a couple of cans of fresh in. If that doesn't work, I'll start working though the diagnostic manual |
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1979 Mini 1000
1972 Triumph GT6
2007 VW Golf GTi
1979 VW T25 Leisuredrive
1988 Range Rover Vogue SE
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Sept 19, 2018 10:48:45 GMT
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Have you double checked there are no air leaks or damage to the hose between the air meter and plenium?
They really don't like even the smallest leak.
As you've had it off I would also pull back the rubber boot on the air meter connector and check the wiring, they tend to get knocked and pulled around, one of my wires was broken.
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ivangt6
Part of things
Posts: 776
Club RR Member Number: 132
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Range Rover Classicivangt6
@ivangt6
Club Retro Rides Member 132
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Sept 19, 2018 13:55:31 GMT
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Have you double checked there are no air leaks or damage to the hose between the air meter and plenium? They really don't like even the smallest leak. As you've had it off I would also pull back the rubber boot on the air meter connector and check the wiring, they tend to get knocked and pulled around, one of my wires was broken. Pretty sure all that is OK. Could do with a new AFM to plenum intake hose as I think mine is the original but I don't think its holed yet. Day 3 Drained old fuel and refilled with V-power. pretty gunky, although some of the colour is from where its dissolved the waxoil on the tank as it drained.  Then turned my attention to the oil pressure light while it was draining. Turns out the circuit board has worn through where the bulb contacts.  Little smear of copper grease has cured this for now  Stuck new fuel in, disconnected the cold start injector and pump new fuel through the system. Connected all back up and went for another start Same as before. Swapped the old coil back in again, same. Swapped over the overrun fuel shut off relay again, click. Hmmm new relay clicks, old one doesn't. This was literally the first thing I changed. two old relays in the bin and.. MOT booked for tomorrow  |
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1979 Mini 1000
1972 Triumph GT6
2007 VW Golf GTi
1979 VW T25 Leisuredrive
1988 Range Rover Vogue SE
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Sept 19, 2018 14:43:08 GMT
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The best thing you can do with the overrun fuel cut off is junk it, improves driveabilty and elimantes a whole load of potential issues ( you simply bridge the white/blue and white/black wires at the relay connector).
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ivangt6
Part of things
Posts: 776
Club RR Member Number: 132
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Range Rover Classicivangt6
@ivangt6
Club Retro Rides Member 132
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Sept 19, 2018 14:58:10 GMT
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The best thing you can do with the overrun fuel cut off is junk it, improves driveabilty and elimantes a whole load of potential issues ( you simply bridge the white/blue and white/black wires at the relay connector). Does also give you "sick" pops and bangs on the overrun? |
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1979 Mini 1000
1972 Triumph GT6
2007 VW Golf GTi
1979 VW T25 Leisuredrive
1988 Range Rover Vogue SE
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Sept 19, 2018 17:00:23 GMT
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Mine has never had it connected, but I doubt it will as it cuts the ignition pulse to the ecu and consequently all the fuel .
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ivangt6
Part of things
Posts: 776
Club RR Member Number: 132
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Range Rover Classicivangt6
@ivangt6
Club Retro Rides Member 132
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Sept 20, 2018 10:30:42 GMT
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It's a fail!
Exhaust is too loud despite them passing the disco in July with this exhaust fitted and the RH side repeater stopped working
Not too bad considering how much its been ripped apart this year. I have a centre silencer in my garage so I'll fit that and sort the side repeater. Hopefully go for a retest saturday
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1979 Mini 1000
1972 Triumph GT6
2007 VW Golf GTi
1979 VW T25 Leisuredrive
1988 Range Rover Vogue SE
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Sept 20, 2018 11:25:29 GMT
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It's a fail! Exhaust is too loud Is that a quantified, "X decibels too loud" or, "That's too loud mate"? |
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Sept 20, 2018 12:40:15 GMT
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on a v8 theres no such thing as too loud, clearly they are not qualified to judge minimum road safety
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Sept 20, 2018 12:41:41 GMT
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Mine passed last year, this year I got "exhaust emits excess volume compared with a similar car with an exhaust in average condition" or something to that effect, I guess it's just tester specific and wether he's a car guy or not. Stuck a standard one on for retest.
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ivangt6
Part of things
Posts: 776
Club RR Member Number: 132
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Range Rover Classicivangt6
@ivangt6
Club Retro Rides Member 132
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Sept 20, 2018 14:42:38 GMT
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"exhaust noise is clearly in excess of that emitted by a similar vehicle fitted with a standard silencer in average condition [8.1.1(a)]"
I'll stick the centre silencer on temporarily for the mot. They're obviously well jel.
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1979 Mini 1000
1972 Triumph GT6
2007 VW Golf GTi
1979 VW T25 Leisuredrive
1988 Range Rover Vogue SE
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Sept 20, 2018 17:22:42 GMT
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its one of the requirements which came in with the new mot in may, anyone idea how they apply this to a modified car? (I'm specifically thinking of my tr7V8), there is no standard silencer to compare it to!
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ivangt6
Part of things
Posts: 776
Club RR Member Number: 132
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Range Rover Classicivangt6
@ivangt6
Club Retro Rides Member 132
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Sept 21, 2018 11:24:21 GMT
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Side repeater fixed, just a dirty contact on the bulb holder Found a small exhaust leak from under the bolt filling the lambda sensor hole. Fixed with some exhaust paste in the hole and refitted the bolt. And took it for a retest.  Passed! Advisories for noisy exhaust and perished fuel cap seal. Happy with that.  Off for a drive... |
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Last Edit: Sept 21, 2018 11:25:10 GMT by ivangt6
1979 Mini 1000
1972 Triumph GT6
2007 VW Golf GTi
1979 VW T25 Leisuredrive
1988 Range Rover Vogue SE
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Sept 21, 2018 11:29:01 GMT
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Good result, did you not need to fit the additional muffler then?
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Sept 21, 2018 11:29:07 GMT
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i would have said, noisy exhaust ? why thanks for noticing
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Sept 21, 2018 11:50:07 GMT
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well done! It looks good too. The car was not used much the past 12 years
Peter
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ivangt6
Part of things
Posts: 776
Club RR Member Number: 132
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Range Rover Classicivangt6
@ivangt6
Club Retro Rides Member 132
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Sept 21, 2018 17:46:37 GMT
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Good result, did you not need to fit the additional muffler then? No, mainly because I couldn't get the centre pipe to release. So thought sod it. I was only going to put it back to how it was post mot anyway |
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1979 Mini 1000
1972 Triumph GT6
2007 VW Golf GTi
1979 VW T25 Leisuredrive
1988 Range Rover Vogue SE
|
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ivangt6
Part of things
Posts: 776
Club RR Member Number: 132
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Range Rover Classicivangt6
@ivangt6
Club Retro Rides Member 132
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Sept 21, 2018 17:51:15 GMT
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 Done over 40 miles already which has thrown up a niggle. It's running rich and fouling the spark plugs. This may well be down to me fitting a free flowing exhaust and airfilter. Will check the temp sensor first and bypass that stupid fuel overrun shutoff relay. If that doesn't improve anything I'll have a look at adjusting the maf |
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1979 Mini 1000
1972 Triumph GT6
2007 VW Golf GTi
1979 VW T25 Leisuredrive
1988 Range Rover Vogue SE
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