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Jun 11, 2017 18:51:55 GMT
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I was pootling along the M1 today on my way to Halifax to Pinstripe a 28' Model A Pickup. Got no further than two junctions when the throttle stuck on, think my brake pads have given up too after stopping it. Plenty of smoke!!! Popped the bonnet and the cable is still attached and looks to be working and the throttle arm is at its return point o it's obviously something internal?  Any ideas?? |
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Jun 11, 2017 21:06:58 GMT
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Probably it's not a stuck throttle, but running-away on fuel or oil from another source. Maybe a failed turbo seal or drawing engine oil through a breather.
You need to find the source of the unmetered fuel and deal with it. You were fortunate to be able to stop/stop the engine. Youtube has many videos of diesel runaways and many end up killing the engine.
Nick
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1967 Triumph Vitesse convertible (old friend)
1996 Audi A6 2.5 TDI Avant (still durability testing)
1972 GT6 Mk3 (Restored after loong rest & getting the hang of being a car again)
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Probably it's not a stuck throttle, but running-away on fuel or oil from another source. Maybe a failed turbo seal or drawing engine oil through a breather. You need to find the source of the unmetered fuel and deal with it. You were fortunate to be able to stop/stop the engine. Youtube has many videos of diesel runaways and many end up killing the engine. Nick Excellent thanks for the reply vitesseefiWhat's my first step in checking for this?? The "sticking on" happened a few weeks a go also but rectified itself quite quickly that's why my initial thought was a sticky throttle cable. |
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why would the brake pads die from the throttle sticking on? take it out of gear.
first step is take the pipe off the turbo and look for excessive oil.
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Davey
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why would the brake pads die from the throttle sticking on? take it out of gear. first step is take the pipe off the turbo and look for excessive oil. I'd imagine from trying to stall it in gear to make it stop? Which would also add to the running away theory. |
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K11 Micra x3 - Mk3 astra - Seat Marbella - Mk6 Escort estate - B5 Passat - Alfa 156 estate - E36 compact
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Jun 12, 2017 20:07:10 GMT
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Took boost pipe off and there is just some sooty/greasy residue not actual liquid in there at all???
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Davey
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Jun 13, 2017 10:15:01 GMT
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Took boost pipe off and there is just some sooty/greasy residue not actual liquid in there at all??? Which side of the turbo? The intake side wont be bad, the output side may very well wet. |
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K11 Micra x3 - Mk3 astra - Seat Marbella - Mk6 Escort estate - B5 Passat - Alfa 156 estate - E36 compact
Mk2 MR2 T-bar - E46 328i - Skoda Superb - Fiat seicento - 6n2 Polo - 6n polo 1.6 - Mk1 GS300
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Jun 13, 2017 12:47:09 GMT
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Took boost pipe off and there is just some sooty/greasy residue not actual liquid in there at all??? Which side of the turbo? The intake side wont be bad, the output side may very well wet. Balls! Will take it off completely! |
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Davey
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Jun 13, 2017 13:01:48 GMT
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Which side of the turbo? The intake side wont be bad, the output side may very well wet. Balls! Will take it off completely! I bet most people would do the same thing just take of the easy to get to one. If you think about it its drawing oil from the turbo so anything up stream should be dry! Keep us updated on what you find. Does it rev uncontrollably past the red line when it happens? |
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K11 Micra x3 - Mk3 astra - Seat Marbella - Mk6 Escort estate - B5 Passat - Alfa 156 estate - E36 compact
Mk2 MR2 T-bar - E46 328i - Skoda Superb - Fiat seicento - 6n2 Polo - 6n polo 1.6 - Mk1 GS300
EU8 civic type S - MG ZT cdti - R56 MINI Cooper S - Audi A3 8p - Jaguar XF (X250) - FN2 Civic Type R - Mk2 2.0i Ford Focus
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Jun 13, 2017 13:12:30 GMT
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Balls! Will take it off completely! I bet most people would do the same thing just take of the easy to get to one. If you think about it its drawing oil from the turbo so anything up stream should be dry! Keep us updated on what you find. Does it rev uncontrollably past the red line when it happens? As soon as o realised what it was doing I stopped it. Fired it a couple of times since and it's still as if foots to the floor. But looking again last night the throttle arm looks as if it should go back some more and the cable is a little slack. There's a threaded bar up to the arm which I'm wondering could have turned out?? |
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Davey
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Jun 13, 2017 13:17:11 GMT
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I bet most people would do the same thing just take of the easy to get to one. If you think about it its drawing oil from the turbo so anything up stream should be dry! Keep us updated on what you find. Does it rev uncontrollably past the red line when it happens? As soon as o realised what it was doing I stopped it. Fired it a couple of times since and it's still as if foots to the floor. But looking again last night the throttle arm looks as if it should go back some more and the cable is a little slack. There's a threaded bar up to the arm which I'm wondering could have turned out?? If the cables slack it sounds about right, if it was stuck it would be tight and holding it open, unless there is something making the mechanism stock, can you push it more closed than it is manually? Can you post a picture of the setup i'm sure someone can enlighten us. |
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K11 Micra x3 - Mk3 astra - Seat Marbella - Mk6 Escort estate - B5 Passat - Alfa 156 estate - E36 compact
Mk2 MR2 T-bar - E46 328i - Skoda Superb - Fiat seicento - 6n2 Polo - 6n polo 1.6 - Mk1 GS300
EU8 civic type S - MG ZT cdti - R56 MINI Cooper S - Audi A3 8p - Jaguar XF (X250) - FN2 Civic Type R - Mk2 2.0i Ford Focus
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Jun 13, 2017 13:58:09 GMT
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there should be some slack in the cable, sounds like you are describing the throttle stop, unless you've fiddled with it leave it alone.
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Jun 13, 2017 14:45:04 GMT
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there should be some slack in the cable, sounds like you are describing the throttle stop, unless you've fiddled with it leave it alone. Yep that would be it |
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Davey
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Jun 13, 2017 15:36:31 GMT
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Just read that you've started it up and stopped it several times.
Are you just turning the ignition off or are you having to stall the car?
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K11 Micra x3 - Mk3 astra - Seat Marbella - Mk6 Escort estate - B5 Passat - Alfa 156 estate - E36 compact
Mk2 MR2 T-bar - E46 328i - Skoda Superb - Fiat seicento - 6n2 Polo - 6n polo 1.6 - Mk1 GS300
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Jun 13, 2017 15:54:31 GMT
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Just read that you've started it up and stopped it several times. Are you just turning the ignition off or are you having to stall the car? Turning it off mate |
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Jun 13, 2017 18:32:20 GMT
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Well if its turning off with the ignition its not 'running away'.
Sounds like it will a problem with the pumps internals - but the vague information makes it hard to tell.
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Jun 13, 2017 19:36:24 GMT
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Well if its turning off with the ignition its not 'running away'. Sounds like it will a problem with the pumps internals - but the vague information makes it hard to tell. What more you need to know mate? |
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Davey
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Well if its turning off with the ignition its not 'running away'. Sounds like it will a problem with the pumps internals - but the vague information makes it hard to tell. What more you need to know mate? With the type of problem you have its hard to guess without having the car in front of you. Can you get an image of the engine bay? |
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K11 Micra x3 - Mk3 astra - Seat Marbella - Mk6 Escort estate - B5 Passat - Alfa 156 estate - E36 compact
Mk2 MR2 T-bar - E46 328i - Skoda Superb - Fiat seicento - 6n2 Polo - 6n polo 1.6 - Mk1 GS300
EU8 civic type S - MG ZT cdti - R56 MINI Cooper S - Audi A3 8p - Jaguar XF (X250) - FN2 Civic Type R - Mk2 2.0i Ford Focus
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As already said, if it turns off on the key it's not running away on engine oil, there is an internal problem with the pump (as you said right at the beginning!).
I don't think there is any direct linkage between the external throttle level and the internal works - I think the external lever just pulls on an internal spring.
Probably time to find another pump unless you are feeling brave enough to look inside the existing one!
Nick
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1967 Triumph Vitesse convertible (old friend)
1996 Audi A6 2.5 TDI Avant (still durability testing)
1972 GT6 Mk3 (Restored after loong rest & getting the hang of being a car again)
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fad
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There's a beautiful vid of a police car running away on YouTube somewhere.
For reference if you find that happening... Put in neutral, stop car, 5th gear, handbrake on, brakes anchored on, let the clutch up. That'll stop it.
It happened to me on a ship I was on once. You don't wanna know how scary a farkin huge marine engine with pistons the size of oil drums that is limited to 600rpm is when it runs off with no way of stalling it!!!
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Last Edit: Jun 15, 2017 8:04:49 GMT by fad
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