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11th April 2024, 15:03 | #1 |
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MG ZT 190 Join Date: Nov 2012
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P0304 error spark plug servicing
I have a 2005 MG ZT and had an engine error message P0304 which is misfire on cylinder 4. I think it's a faulty spark plug but my garage would not do a spark plug replacement in a full service as they said it's too awkward to get to the plugs on this MG ZT.
Is that the case with this vehicle, should I try another garage and would it be expensive? Any advice would be helpful. Thanks! |
11th April 2024, 16:08 | #2 | |
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11th April 2024, 18:15 | #3 |
Gets stuck in
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There's an access panel on the bulkhead:
https://the75andztclub.co.uk/forum/s...d.php?t=120114 https://the75andztclub.co.uk/forum/s...d.php?t=166829 Awkward, but certainly shouldn't be beyond a professional. Your fault could also be caused by a failing coil.
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Matt 2001 Rover 75 Connoisseur SE 2.5 (BRG) 1999 Rover 75 Club 2.5 (Dorchester Red) 1973 Triumph Dolomite (Honeysuckle) Last edited by Matt_75; 11th April 2024 at 18:18.. |
11th April 2024, 18:51 | #4 |
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Thanks both!
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12th April 2024, 14:51 | #5 |
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18th April 2024, 15:33 | #6 |
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Yes I think that was it. Still a bit penny-pinching IMO.
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18th April 2024, 16:12 | #7 | |
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Having changed the sparking plugs on the right-hand bank myself I'm with the garage and Tim on this one. You either have to remove the manifold chamber which involves about fifteen disconnections or take off the windscreen wipers and remove the scuttle cover to reach the plugs through a removable panel after unscrewing the plug-top ignition coils in a restricted place! It's quite simply a painful job. Fortunately the original triple electrode plugs last well beyond the service schedule period. Simon
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18th April 2024, 20:24 | #8 | |
I really should get out more.......
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24th April 2024, 17:51 | #9 | |
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Thanks for that info Simon. Makes me think another garage was lying when they said they replaced the spark plugs, it was no problem, and they threw away the old plugs, so I never saw them. |
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