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13th June 2011, 18:30 | #1 |
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ROVER 75 SALOON 2.0 v6 connoisseur Join Date: Dec 2010
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1.8 mis-fire in the morning
hi all i have a w plate 1.8 connie that has developed a mis-fire in the morning...i say in the morning what i should say is the first time the engine is started.the car will misfire for about a mile,it is quite bad and revving the engine will not clear it, after about a mile it clears completly and will not return for the rest of the day but sure enough next morning it has returned.any ideas?
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13th June 2011, 21:01 | #2 | |
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13th June 2011, 21:36 | #3 |
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that is quite possible ,or there is a leak/crack in the inlet manifold which is drawing more un monitored air causing an in balance in the air/ fuel ratio and closes as the engine warms up with the thermal expansion
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14th June 2011, 12:57 | #4 |
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Rover 75 V6 2.0 Club Tourer LPG Join Date: Apr 2011
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if it only happens in the morning then look at heat or moisture being involved somehow. So working off that -
You could try spraying some water repellent liquid onto the ignition parts on the engine before setting off in the morning and see if that makes a difference, before attempting anything else. |
14th June 2011, 16:02 | #5 |
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Mitsubishi Eclipse Cross 3. 1.5 Petrol 6 Speed Manual Gearbox. Great fan of the Mk1 75 which I had 3 Join Date: Feb 2007
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[COLOR="Red"]Urgent Level Check[/COLOR]
Hi
Have you checked the Coolant Level. Your symptoms sound very like a leaking Inlet Manifold Joint which normally affects Nos. 1 and 4 Cylinders, causing dampness within the Cylinders until it is burnt off. Check Coolant level asap, and if low have the Inlet Manifold joint renewed with the latest type Joint, Part No. LKJ101110 Dark Grey/Black in colour available from Rimmers etc.. Regards, Telfer. Last edited by Telferstr; 14th June 2011 at 16:08.. |
16th June 2011, 10:17 | #6 | |
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17th June 2011, 12:32 | #7 | |
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Mitsubishi Eclipse Cross 3. 1.5 Petrol 6 Speed Manual Gearbox. Great fan of the Mk1 75 which I had 3 Join Date: Feb 2007
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If there are no leaks at present, I would be inclined to leave well alone. However, there is a body of opinion that the Inlet Manifold Joint should be treated as a service item, and renewed every 4 years or so. Now this procedure related to the old original gasket which as you know was made of a lighter material than the updated versions. Hopefully the new heavier Joint will have overcome the problem and should last much longer. Regards, Telfer. |
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