poorrich6

Thanks everybody for your suggestions, What I can say is its not the breather as I tried it with the fuel cap off. I think I shall definitely clean the carbs out and change the condenser, I had planned to upgrade to electronic ignition anyway so I may do that. What ever I do, I shall do 1 at a time and then we will have an answer. I will let you all know when I have done it. Cheers

Hi Every one I am a new member and a proud owner of a Triumph Spitfire mk3 1969 that I have only had for a couple of weeks. But I have a problem, I hope someone can help me out. The Engine starts first turn of the key with the choke out and when its warmed up it runs fine with no choke after a couple of minutes. It idles nice and revs up instant no splutter. It will stay running on the driveway for along time it doesn't stop but when you get in and drive away it will run nice for 5 to 10 minutes and then it becomes very lumpy and looses power, it sounds like its only running on 3 or maybe 2 cylinders. I try to rev it but it wont, it just stops! If you leave it for 5 to ten minutes it will start again and drive off no problem but will stop again after a couple of minutes. Leave it again, and it will start and drive again and this will carry on until I eventually get it home. Before I bought the car the owner fitted a new fuel pump. I have fuel coming up to the carbs no problem, I checked. Things I have changed. New coil New HT Leads If anyone has any ideas please let me know. Thanks