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Jun 14th, 2026
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Joined: Dec 2008
Posts: 22,358 Likes: 353
Roadster Guru Member of the Inner Circle
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Roadster Guru Member of the Inner Circle
Joined: Dec 2008
Posts: 22,358 Likes: 353 |
If the idle isn't smooth, check the MAF. Mine needed a clean before 20k miles. It was slightly oily, and a squirt of cleaner fluid resolved it.
Worth checking,( especially with K&Ns).
DaveW
'05 Red Roadster S1
'16 Yellow (Not the only) Narrow AR GDI Plus 4
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Joined: Aug 2020
Posts: 502
Talk Morgan Regular
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OP
Talk Morgan Regular
Joined: Aug 2020
Posts: 502 |
If the idle isn't smooth, check the MAF. Mine needed a clean before 20k miles. It was slightly oily, and a squirt of cleaner fluid resolved it.
Worth checking,( especially with K&Ns). Thanks Dave, MAF has been cleaned, and then changed. Also cleaned the IAC valve, changed standard air filter and spark plugs. Next up will be the leads. I've had all manner of additives put in the fuel to clean the injectors also. It's not an issue as it never stalls, just when you are used to a perfectly smooth running engine in the tin top, it's just a bit irritating.
2004 Series 1 Roadster
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Joined: Aug 2020
Posts: 502
Talk Morgan Regular
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Talk Morgan Regular
Joined: Aug 2020
Posts: 502 |
I've just had the alternator voltage on my 2005 series 1 Roadster tested and it's giving 13.9 volts. Was your engine warm, or was this from a cold start. might do a variety of tests, from cold, warm, with load and without,to see what I get.
2004 Series 1 Roadster
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Joined: Dec 2013
Posts: 1,075 Likes: 1
Has a lot to Say!
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Has a lot to Say!
Joined: Dec 2013
Posts: 1,075 Likes: 1 |
It was tested during a service & MOT visit to Berrybrook - I assume the engine was warm
John
Silver 2005 S1 Roadster V6 - Henrietta
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Joined: Nov 2015
Posts: 8,672 Likes: 489
Just barreling along Needs to Get Out More!
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Just barreling along Needs to Get Out More!
Joined: Nov 2015
Posts: 8,672 Likes: 489 |
If the idle isn't smooth, check the MAF. Mine needed a clean before 20k miles. It was slightly oily, and a squirt of cleaner fluid resolved it.
Worth checking,( especially with K&Ns). Thanks Dave, MAF has been cleaned, and then changed. Also cleaned the IAC valve, changed standard air filter and spark plugs. Next up will be the leads. I've had all manner of additives put in the fuel to clean the injectors also. It's not an issue as it never stalls, just when you are used to a perfectly smooth running engine in the tin top, it's just a bit irritating. Coil pack ? even OE Ford one's are only about £60 ish
Jon M
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Joined: Aug 2020
Posts: 502
Talk Morgan Regular
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OP
Talk Morgan Regular
Joined: Aug 2020
Posts: 502 |
If the idle isn't smooth, check the MAF. Mine needed a clean before 20k miles. It was slightly oily, and a squirt of cleaner fluid resolved it.
Worth checking,( especially with K&Ns). Thanks Dave, MAF has been cleaned, and then changed. Also cleaned the IAC valve, changed standard air filter and spark plugs. Next up will be the leads. I've had all manner of additives put in the fuel to clean the injectors also. It's not an issue as it never stalls, just when you are used to a perfectly smooth running engine in the tin top, it's just a bit irritating. Coil pack ? even OE Ford one's are only about £60 ish Never considered that. Don't mind shelling out £60, but is there a test I could do to see if that could be the cause?
2004 Series 1 Roadster
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Joined: May 2014
Posts: 5,439 Likes: 131
Black Rat Charter Member
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Black Rat Charter Member
Joined: May 2014
Posts: 5,439 Likes: 131 |
If the idle isn't smooth, check the MAF. Mine needed a clean before 20k miles. It was slightly oily, and a squirt of cleaner fluid resolved it.
Worth checking,( especially with K&Ns). Thanks Dave, MAF has been cleaned, and then changed. Also cleaned the IAC valve, changed standard air filter and spark plugs. Next up will be the leads. I've had all manner of additives put in the fuel to clean the injectors also. It's not an issue as it never stalls, just when you are used to a perfectly smooth running engine in the tin top, it's just a bit irritating. Coil pack ? even OE Ford one's are only about £60 ish Never considered that. Don't mind shelling out £60, but is there a test I could do to see if that could be the cause? Try pulling the plugs after rough running, see if any are wet/different colour.
Keith
2013 narrow bodied + 4 Ruby.
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Joined: Aug 2020
Posts: 502
Talk Morgan Regular
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Talk Morgan Regular
Joined: Aug 2020
Posts: 502 |
Try pulling the plugs after rough running, see if any are wet/different colour.
[/quote]
I changed the plugs last year so that could be an idea as any colour change would be obvious. One was a bit wet, but I did squirt some wd40 down the hole as the plug was tight, so this might have been why.
2004 Series 1 Roadster
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Joined: Jun 2015
Posts: 2,087 Likes: 70
Talk Morgan Expert
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Talk Morgan Expert
Joined: Jun 2015
Posts: 2,087 Likes: 70 |
Whilst WD40 might be used on the threads of a plug to help clean them up, squirting it down the plug hole is not advised as it can create carbon deposits on the plug and cause issues. Well documented if you google.
Doug
2011 Plus 4 in Rich Maroon
1972 750 “ComDom” sprinter
1958 Triton 650
1992 Triumph Trophy 900
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Joined: Nov 2015
Posts: 8,672 Likes: 489
Just barreling along Needs to Get Out More!
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Just barreling along Needs to Get Out More!
Joined: Nov 2015
Posts: 8,672 Likes: 489 |
If the idle isn't smooth, check the MAF. Mine needed a clean before 20k miles. It was slightly oily, and a squirt of cleaner fluid resolved it.
Worth checking,( especially with K&Ns). Thanks Dave, MAF has been cleaned, and then changed. Also cleaned the IAC valve, changed standard air filter and spark plugs. Next up will be the leads. I've had all manner of additives put in the fuel to clean the injectors also. It's not an issue as it never stalls, just when you are used to a perfectly smooth running engine in the tin top, it's just a bit irritating. Coil pack ? even OE Ford one's are only about £60 ish Never considered that. Don't mind shelling out £60, but is there a test I could do to see if that could be the cause?Umm, not really a technical one, but symptoms similar to yours, like lumpy tickover, hesitation on acceleration, lack of torque, tend to point to a coil pack failing (buy a decent branded one, not some fleabay copycat crap)
Jon M
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