I've got an '87 R11 Turbo that I've been repairing for the last few months as a project car. I've got it running but theres a fault. It starts, gets warm and drives fine for about 2 or 3 miles and then the car will act as if it has run out of fuel. It jerks and jolts then grinds to a halt. It then needs to be started using full choke to gradually creak home. When it happens the symptoms are inconsistent some times it can be restarted no prob, sometimes I have to push it home. I've had the carb refurbished, a new fuel filter ,recon turbo, Another ignition module. I wondered if it is the fuel pump perhaps because the carb appears to empty or could it be the fuel pressure regulator, I can't find any definate fault. It's weird the car drives well for a while. The car has been off the road for 3 years.I would appreciate any suggestions or 'tests' that could be done.
Woody.
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I had a similar problem on a Fuego. It started well, went a few miles and stopped. The fault was dirt in the fuel tank, and as a result of it, a blocked fuel filter and a blocked idle needle in the carb. Check if your fuel filter is clean.
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I Agree With Andy. Renault 9/11's fuel tanks are miserable. Check those things out. Those Symptoms are really odd, and try the following. Turn the car on, let the engine roll for a while in neutral, near your house. when it reaches normal function temperature, try to ride it. It should work well.
Tell me the result of the test, for further diagnosis
Eduardo
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I've tried driving the car both from cold and after letting it warm up. It will tick over all day in neutral but will only drive a couple of miles at a time. The fuel filter is brand new from Renault. The carbs refurbished,(But they didn't do a good job in setting it up so it may not be spot on) the fuel tank could be dirty but the carb never shows a blockage. If the car decides to breakdown it will usually break down when accelerating fairly hard and the turbo is going. It will hit about 3400RPM then it will jerk and stall, (The engine will stop firing altogether if you press the gas pedal far enough) and then eventually grind to a halt. Either it will restart but wont pull away or it wont restart at all. Then what happens, is I can take off the carb inlet elbow at the side of the road and operate the throttle a couple of times and I can tell the carbs empty. After turning on the ignition again the carb will refill (You can hear it) and away you go again for a couple of miles. I must disturb something but I can't find any actual fault. There are other quirks that I could type pages about but see what you think.
Thanks, Woody.
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Hello. I've seen that happen in my r9, but in a smaller scale... Once I was accelerating, and when I pressed it to its maximum, the car started to choke, but then I decellerated, and when the engine was dying at about 1500 rpm, I reaccelerated softly, and it started working OK. When I got home, I dismounted a red part, that contains the contacts to the spark plugs(I beleive), and cleaned it, as it was quite dirty, and with a very active gasoline smell. I believe that you problem isn't this, but try it, you won't lose anything. (It's a red part with 5 cables, 4 around and one in the center. One bolt on the side, unscrew carefully for it not to fall to the middle of the engine.) It surely won't do worse, but may not do much better
Eduardo
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There´s one more thing to check: at the non-turbocharged engines there is a underpressure hose connecting the inlet manifold the the ignition computer (I am not quite shure about the turbo engine). If this hose is not tight, there´s a possibility of ignition failure. As well, the diaphragma of the computer module might be faulty. Check if hose and diaphragma are OK
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I've had another look. The 'red part' is the distributer and I've checked and its in 'new' condition. The hose to the ignit module is the vacuum advance hose and that appears to be okay aswell. I think I may have found something. If you floor the car in 2nd gear at about 1500RPM and accellerate to 4000RPM I noticed the Turbo gauge only reaches a max of about a 40 percent reading. Is this low? Also I found a tiny split on one of those thin pipes off the carb inlet, which must be leaking. Could this be anything, I'll fix this leak anyway.
See what you think, thanx, Woody.
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The real problem sounds like a weak fuel pump or blocked filter or knackered regulater. replace each of these(cheapest first). It should cure the problem if the carb is in good condition.
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