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Old 1 Week Ago   #16
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Re: Petrol Injector question

Quote Originally Posted by g8rpi View Post
The injector difference sounds very suspicious. Did you note the part numbers? Was the fault there before the last service? If not I'd be talking to the garage who changed the injector.
Robert G8RPI.
Didn't look for part numbers.

Before the injector change the car was running well. I had noticed some petrol smells so when the mechanic said an injector was leaking I was not suprised.
The recent problem did not start imediately after the injector change which was last November. The other injectors are the originals; I've had the car from new.
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Old 6 Days Ago   #17
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Re: Petrol Injector question

Quote Originally Posted by jackwhoo View Post
worthwhile check is the HT leads and coils ...because symptoms are classic weak spark failing under load.
While waiting for the lead set to use with MultiECUscan:
The symptoms are, engine not wanting to run on start up especially when hot. Then when the engine starts it's only running on three cylinders. This clears after about a minute. Smells of unburnt fuel! The car then runs as well as ever; top speed is good; acceleration is good. When climbing steep hills the engine sometimes shows signs of misfiring, (I guess that might indicate breaking down under load). Do you still think weak spark could be the issue?
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Old 6 Days Ago   #18
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Re: Petrol Injector question

If you want to look at something before MES you could pull the spark plug , keep note of which plug is from which cylinder , compare the looks of the firing ends for differences (particularly the one with odd injector)
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Old 6 Days Ago   #19
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Re: Petrol Injector question

Injectors should all be the same, so worth querying with the fitting garage. Possibly an aftermarket one, listed for multiple engines, but there's a difference the manufacturer has not caught up with.

Plugs hopefully will give a clue as to which cylinder is misfiring.

Once you have MES, plug it in and see the readings before starting the engine, then as started, watch them and see if they change as expected. Duff temp senders or other sensors can give acceptable, but wrong, readings, so ECU does not realise they are wrong.
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Old 6 Days Ago   #20
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Re: Petrol Injector question

Something new today. Started the car, with the current reluctance. When I started to manoeuvre there was a strange rubbing, squeezing feel as I turned the steering wheel. I had to have a look underneath the car to see if something was caught. The sounds cleared when I started to drive. Electric power steering problem maybe? Could this be connected to the misfire problem; I'm imagining a faulty ECU causing mayhem?
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Old 6 Days Ago   #21
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Re: Petrol Injector question

An unusual description. get your head under the dash and take a good look at the steering column and pedals. Possible that there might be some wiring fouling perhaps? Look for any conflicts.
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Old 4 Days Ago   #22
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Re: Petrol Injector question

No more strange noises. The day was very hot; I'd parked in a multi-story car park. The floor was painted. I can only think the tyres were squeaking on the surface as I manoeuvred.
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Old 1 Day Ago   #23
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Re: Petrol Injector question

Setting up MultiECUScan. Software and interface driver installed.
USB serial port test passes ok. Interface lights flash when F11 'Scan' is pressed but when F10 'Connect' is pressed I get a 'Check your cable and serial port settings' Any ideas please?

Update: Scan vehicle works and shows what systems are on the vehicle but connect does not!

Update 2: Scan DTC is not active. What does that mean?
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Last edited by Neil Ives; 1 Day Ago at 10:26. Reason: Updates
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