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Wales
by Joske Vermeule, September 1
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Forums39
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Jun 14th, 2026
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Joined: Jan 2013
Posts: 400
Learner Plates Off!
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OP
Learner Plates Off!
Joined: Jan 2013
Posts: 400 |
Well, it happened to me too.
Just off the highway into a right corner and the engine puffs, wheezes and gives up. Managed to push it home, believe it or not.
It was a puff/gassy sound, not a clank/mechanical one.
Oil light on, check engine light on.
Have gas. Normal petrol pump sound from rear when ignition on. No help from a battery booster. 12.5 volts ignition on.
Removed ground wire and cleaned the connection. No frayed wires.
Spark plugs were a bit loose(!), now tightened. Spark from both. They look ok.
Oil cap seal intact.
Fault codes:
PO170 Bad Sites front
PO173 Bad Sites rear
No idea what they mean. Anyone?
Maybe rectifier, but canīt get one until next week, if even then. Might go the Ebay route.
Suggestions?
Last edited by DocNik; 25/07/15 12:57 PM.
M3W, now!!!
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Joined: Feb 2012
Posts: 1,664
Talk Morgan Enthusiast
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Talk Morgan Enthusiast
Joined: Feb 2012
Posts: 1,664 |
Oil change recently? Is there any oil seeping out from the air filter area?
Charlie, Former Editor
Morgan Owners Group - Great Lakes
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Joined: Oct 2012
Posts: 2,822 Likes: 155
Talk Morgan Expert
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Talk Morgan Expert
Joined: Oct 2012
Posts: 2,822 Likes: 155 |
You might want to have a look under the cam belt cover. Could easily be a snapped belt. Easy fix if it is once you have a replacement belt anyway.
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Joined: Jan 2013
Posts: 400
Learner Plates Off!
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OP
Learner Plates Off!
Joined: Jan 2013
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Sorry, I knew I had forgotten something.
Cam belt is ok.
A little "greasy" air filter, but not loads of oil.
Tried starting without air filter - no change. A puff and a wheeze and it gives up.
Oil changed May-June last year. Due for a change now.
Have 8280 km on the car (5150 miles).
M3W, now!!!
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Joined: Jan 2012
Posts: 14,976 Likes: 2
Member of the Inner Circle
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Member of the Inner Circle
Joined: Jan 2012
Posts: 14,976 Likes: 2 |
Does it have a MAF sensor? If so disconnect it so ECU uses default values. Might work. Or that's what my google research tells me.
Richard
1976 4/4 4 Seater
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Joined: Apr 2013
Posts: 215
L - Learner Plates On
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L - Learner Plates On
Joined: Apr 2013
Posts: 215 |
did you check valve springs?
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Joined: Oct 2012
Posts: 2,822 Likes: 155
Talk Morgan Expert
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Talk Morgan Expert
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Just a maybe, but it could be that the fuel pump sounds like it is running normally but is delivering inadequate pressure to the injection system. From memory this has happened before and would need a fuel pressure gauge connected up to find out.
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Joined: Jan 2012
Posts: 14,976 Likes: 2
Member of the Inner Circle
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Member of the Inner Circle
Joined: Jan 2012
Posts: 14,976 Likes: 2 |
Just a maybe, but it could be that the fuel pump sounds like it is running normally but is delivering inadequate pressure to the injection system. From memory this has happened before and would need a fuel pressure gauge connected up to find out. Would link to the codes based on Google.
Richard
1976 4/4 4 Seater
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Joined: Jan 2013
Posts: 400
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Donīt really know if our engines have a MAF sensor. Do they? Where is the connector in that case?
Have never had the valve covers off. Not sure I want to start now... *hunkering down, cowardly*
Donīt have a fuel pressure gauge. If i can find one, to which fuel line do I connect it?
M3W, now!!!
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Joined: Oct 2012
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Talk Morgan Expert
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Talk Morgan Expert
Joined: Oct 2012
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I'm several hundred miles from my M3W at the moment so I can't check but I think there is a port on one of the fuel lines to the injectors. Most garages will have an appropriate gauge and adaptors to make it fit. I also don't have the S&S manual accessible so can't even give you a pressure to llok for.
Sorry...
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