graniteman Posted April 18, 2013 Report Share Posted April 18, 2013 Hi any ideas car's been running really well over the last few weeks. Starts from cold and runs very nice when it seems to get warm it starts to misfire at low speed or when you put your foot down. As i am new to all this any ideas ?? Also cannot seem to up load pictures to the site always says file to big. Many thanks Shaun Quote Link to post Share on other sites
Steves_TR6 Posted April 18, 2013 Report Share Posted April 18, 2013 Sounds like a bit of fuel vaporisation in the fuel injection lines. Most do this to some degree, although low fuel pressure, old MU, injectors and or braided lines can all make it worse. What's the history of the engine? Seve Quote Link to post Share on other sites
jerrytr5 Posted April 18, 2013 Report Share Posted April 18, 2013 Could be one of the dodgy rotor arms - search the forum for more info. Jerry Quote Link to post Share on other sites
Davidw Posted April 18, 2013 Report Share Posted April 18, 2013 I'd only add that a long deceased village blacksmith and mechanic told me about 35 years ago that about 9 out 10 fuel system faults are spark related! Quote Link to post Share on other sites
elclem1 Posted April 18, 2013 Report Share Posted April 18, 2013 Funny, I had the same problem yesterday, Went for a run out and started getting loss of power until eventually I was by the side of the road going nowhere. I thought at first it was fuel related but everything was good, Took the dizzy cap off cleaned up the contacts and rotor arm, and off i went no problems until 5 mins down the road same problem. I am going to change the rotor arm first and see what happens but i think spark related. Andy Quote Link to post Share on other sites
marki Posted April 18, 2013 Report Share Posted April 18, 2013 Hi Shaun. Do you have an ignition pack fitted as this is exactly the symptoms i had, fitted points happy days. Good luck Mark. Quote Link to post Share on other sites
Peter Cobbold Posted April 18, 2013 Report Share Posted April 18, 2013 Coil? Quote Link to post Share on other sites
graniteman Posted April 18, 2013 Author Report Share Posted April 18, 2013 Thank you for all your replies the engine was rebuilt last year and has been running good all new injectors fitted . I will go and have play in the garage tonight and see if i can sort it. I does have an ignition pack on it. I will post how i get on later. Thanks Shaun Quote Link to post Share on other sites
TR NIALL Posted April 18, 2013 Report Share Posted April 18, 2013 Next time it stops feel the Coil,be careful it might be very Hot and if so that's your problem. Quote Link to post Share on other sites
Steves_TR6 Posted April 18, 2013 Report Share Posted April 18, 2013 Its a good point that 90% of fuel problems are ignition ! Quote Link to post Share on other sites
Johncracknell Posted April 18, 2013 Report Share Posted April 18, 2013 ...........and 90% of headaches are drink related ................ Quote Link to post Share on other sites
Davidw Posted April 19, 2013 Report Share Posted April 19, 2013 And 57.8 % of statistics are made up! Quote Link to post Share on other sites
Bill Bourne Posted April 19, 2013 Report Share Posted April 19, 2013 Hi I had this problem once and found it to be the carbon brush inside the lid of the dizzy cap. 1st the new rotor arm was ever so slightly higher that the old one, so used some emery paper to shorten. Then a teeeney bit of oil on the carbon brush solved the problem . Bill Quote Link to post Share on other sites
elclem1 Posted April 24, 2013 Report Share Posted April 24, 2013 Yes bill, you have hit the nail on the head, I changed the rotor arm and no noticeable change , but i had a look inside the dizzy and there was lots of carbon dust inside i swopped it for my new spare - goes like a rocket. Try that solution shaun and see how you get on - works for me. regards Andy Quote Link to post Share on other sites
cp25616 Posted April 24, 2013 Report Share Posted April 24, 2013 Sounds like the coil is on its way out to me. Been there done that. Just change the coil for not much cash and see what happens! Alan Quote Link to post Share on other sites
tr6tuga Posted April 24, 2013 Report Share Posted April 24, 2013 those symtons :-) had them last year and it gets worse.... tried virtualy everthing! the cause? a faulty coil! replace and smoth as ever:-) Quote Link to post Share on other sites
tr6tuga Posted April 24, 2013 Report Share Posted April 24, 2013 and yes is spark 90% :-) Quote Link to post Share on other sites
alec Posted April 25, 2013 Report Share Posted April 25, 2013 Check that the over fuel lever is returning to its off position I have had this stick before & it makes the car run like a bag of nails when the engine is warm. Little drop of 3in1 on the spindle & flick lever to make sure it snaps to off position. Also made the mistake of cable tying the over fuel or choke cable to tidy the engine bay & crushed the inner cable again the lever was not returning to its fully off position Regards Alec Quote Link to post Share on other sites
Clarkey Posted April 25, 2013 Report Share Posted April 25, 2013 Next time it stops feel the Coil,be careful it might be very Hot and if so that's your problem. Hi Niall My Coil gets really hot all the time,but runs like a dream Quote Link to post Share on other sites
TR NIALL Posted April 25, 2013 Report Share Posted April 25, 2013 Hi Niall My Coil gets really hot all the time,but runs like a dream Well next time it wont start after a good run you know what to check The Hot Water from the Tap at Home is Hot,The Hot Water from the Boiled Kettle is Very Hot Get Me Drift Quote Link to post Share on other sites
Clarkey Posted April 26, 2013 Report Share Posted April 26, 2013 Hi Niall Oh i get ya drift.Honestly mine get Fooookin Hot been like it form the start and i did post on this and i have changed coils, But i will check mine against another car that has been on the same distance run Quote Link to post Share on other sites
cmdr19 Posted April 26, 2013 Report Share Posted April 26, 2013 Mine develooed a misfire after a great day out with the Derbyshire Dales group outing last Sunday. Did the same when I took it out today so I stopped by the side of the road,fished the old 'black' rotor arm out of the spares in the boot............seems to have solved the problem. The dodgy 'red'one came in a nice green Lucas box, but where does this sh.t come from? Mike Quote Link to post Share on other sites
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