MSZ Posted September 27, 2021 Author Report Share Posted September 27, 2021 7 hours ago, Paul H said: Have you checked the Powerspark , same as Accuspark unit . Check the magnet is not too close to the electronic unit and the bottom of the rotor arm is not clipping the electronic unit . A giveaway is black dust particles when you remove the dissy cap . Lastly check the rotor arm has no fractures Paul Paul all checked and fine mate Link to comment Share on other sites More sharing options...
DanMi Posted September 27, 2021 Report Share Posted September 27, 2021 have you tried new fuel, as the car was working when you put it in the garage and is now running rough and the only thing that has happened is time and fuel does go stale and that can cause very poor running and 6 months is long enough. Link to comment Share on other sites More sharing options...
MSZ Posted September 27, 2021 Author Report Share Posted September 27, 2021 No I haven’t yet……..especially with all the petrol pump faff going on. After I’m happy that the ignition element is in order I’ll move to check over for air leaks and then fuel. I replaced the fuel filter. The thing is, it starts and runs/ticks over lovely, when I gradually depress the accelerator all the way to around 4000rpm no misfires only happens when I blip the accelerator erratically. Driving out of my driveway and up the road under acceleration it pops, misfires and holds back, as if someone is depressing the brake!!! hopefully in the next few days I can start eliminating possible causes. mike Link to comment Share on other sites More sharing options...
DanMi Posted September 27, 2021 Report Share Posted September 27, 2021 sounds like stale fuel to me or at least those are very similar to the symptoms that my car had after lockdown, and is any easy fix (well not at the moment!) Link to comment Share on other sites More sharing options...
MSZ Posted September 27, 2021 Author Report Share Posted September 27, 2021 17 minutes ago, DanMi said: sounds like stale fuel to me or at least those are very similar to the symptoms that my car had after lockdown, and is any easy fix (well not at the moment!) To be honest what you’re say is an easy fix, I could drain the fuel and use it in lawnmower…….then just try and get hold of fresh fuel 🤔 Link to comment Share on other sites More sharing options...
Pete Lewis Posted September 27, 2021 Report Share Posted September 27, 2021 you have to check your timing to rule that out and to correct flat spot acceleration use engine oil in the dashpots pete Link to comment Share on other sites More sharing options...
MSZ Posted September 27, 2021 Author Report Share Posted September 27, 2021 4 minutes ago, Pete Lewis said: you have to check your timing to rule that out and to correct flat spot acceleration use engine oil in the dashpots pete Yes timing good. And I have engine oil in the dash pots 👍 Link to comment Share on other sites More sharing options...
alan.gilbert_6384 Posted September 27, 2021 Report Share Posted September 27, 2021 Adding a two penny worth, have you got a colour tune spark plug ? Worth checking Mixture as a sooty plug is a rich mixture and best way to set it is with a colour tune in my experience ( the other ways are not as reliable ) and you can see what happens as you rev the engine and at all speeds as you gradually increase the range. You can also see if your burning oil in the mixture. Failing that just change the plugs first and see what happens, good luck. Link to comment Share on other sites More sharing options...
MSZ Posted September 27, 2021 Author Report Share Posted September 27, 2021 13 minutes ago, alan.gilbert_6384 said: Adding a two penny worth, have you got a colour tune spark plug ? Worth checking Mixture as a sooty plug is a rich mixture and best way to set it is with a colour tune in my experience ( the other ways are not as reliable ) and you can see what happens as you rev the engine and at all speeds as you gradually increase the range. You can also see if your burning oil in the mixture. Failing that just change the plugs first and see what happens, good luck. Yes I have a colourtune and used it once or twice but unless you have perfect carburettors it is quite erratic in producing accurate results Link to comment Share on other sites More sharing options...
MSZ Posted October 4, 2021 Author Report Share Posted October 4, 2021 Finally!! Thought Id check in and let you guys know the problem. I swapped the the coil with a known coil that works, the problem still persists............................................. BUT, when replacing with my original coil, I noticed that there was a frayed bare wire protruding through the wiring loom that goes to/from the solenoid. This bare frayed wire was touching the bulkhead panel to which both the solenoid and coil are fixed to. (see pic) I part stripped the loom to expose the wire (which wasn't connected to anything) and decided to cut it cleanly and used a combination of liquid electrical tape and electrical insulating tape at its termination point. I can only think that this cable could of fed some accessory at some point and was abandoned. Everything put back together and fired the car up - BINGO, no misfire, no backfire.....in fact it ticked over nicely and even at 900rpm. I checked that all was firing nicely with Accuspark plug check and they all ran evenly like a Xmas tree (see pic).Took it for a spin and it goes like a rocket!!!.....no hesitation just nicely and strongly. Going to drive it around for a while as i missed the summer and check the mixture before putting it to bed for winter. Id like to thank everybody and their suggestions to help solve my dilemma, which now is solved. Many thanks Mike Link to comment Share on other sites More sharing options...
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