More D-Jet woes

B

Bwana

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Santa Fe, NM
The car has been running most excellently for several years now, zero issues. This morning I took it up to the grocery store, let it warm up completely on the way. It re-started there with no problem, drove home and put it in the driveway to be put away later. Smelled a slight wiff of fuel on the way back but it too disappeared by the time I got home. About ten miles round trip.

THis afternoon, I went to start it and put it in the garage. Cranked a number of times with no starting. I finally gave it a shot of ether and it fired right up. But then lost revs and started to stumble at like just above stall speed, regardless of the throttle position. Tried again a number of times but the same result. Really smooth for the first few seconds, ran right up to 3,000 RPM no problem, then drops quickly and continues to stumble 'till it finally quits.

Any suggestions on where to begin?

Also, I've got a 123 dizzy. A number of you have said you've had problems with it. It doesn't feel like an ignition problem as it revs smoothly when it gets going but you never know. How does it manifest itself when it starts to go wrong?
 
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Could be a few things.

Ground strap to the body at the back of the engine broke.

Fuel pump failure, replace with the E28 pump. It's less expensive & has the same flow rate.

Timing is out.

Manifold Atmospheric Pressure Sensor failure.
 
Thanks Andrew. I'll bet it's the fuel pump, I replaced it once before. I guess the smart thing to do is check the pressure downstream of the filter first. It's like 1.9 bar or so, correct? I've got the part number as 16141178751 which also crosses with the CSi.

Timing "sounds" to be spot on, revs smoothly.
 
Thanks Andrew. The MAP holds vacuum OK and the engine runs so I don't think it's total electrical failure. The ground strap is still hooked up but could probably be cleaned up.

Will check the fuel pressure tomorrow.
 
Key on.
reach over to throttle body.
quick movement on linkage- up, down.

do you hear the crickets?



Key on.
Key on.
Key on.

Crank for 5 seconds

Pull #5 plug.

Is it wet?

Key on.
Key on.
Key on.

Do you hear the fuel pump and relay for
one second each time?
 
I'm convinced it was a passing evil spirit of some sort. Or possibly I accidently did Don's procedure. I tried it this morning and it fired right up, drove it about 6 miles around the neighborhood and back to the house. Left it for about two hours and again, it fired right up. Zero issues. Ghost in the D-Jet no doubt. Nothing like a 48 year old electric (NOT electronic!) FI system.

Thanks for the good vibes
 
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