Car runs great when cruising but breaks down under torque??
Not enough fuel....the diaphragm in the fuel pump is compromised, fuel filter is obstructed or rust in the tank is preventing normal fuel flow~
is this fuel injected or does it have SUs? Been so long, I forgot- I'm guessin' SUs cause if it is Lucas fuel injection, you really got a problem- first suggestion is to find a really good classic car mechanic like my friend Steve here in Santa Fe- really, he has his own shop and only works on them one at a time- a beautiful car like yours needs special attention to keep it running right- not the "assembly line" procedure of ordinary garages, as good as they may be- I think the judge is right though, it's probably fuel- specific suggestions: check the fuel filter, fuel lines, gas tank for dirt and rust- do you know if the gas tank is clean, or new replacement? Man, a 100 year old gas tank is no good and it is where you should start- also, replace those SUs with Webers- get somebody good to do it, like I said
Check the distributor breaker plate, make sure it isn't pulling sideways when the vacuum advance pulls it, this will cause a change in the dwell that will lead to poor performance. Also change out the condenser.
Usually a misfire under load points to the ignition system. I'd start there first then, if no improvement, check the fuel system. HTH. -Jim
I found the problem to be in the gas. The car sat for a couple years so I think I picked up something in the tank. I added Seefoam to a full tank and it cleared up.
Awesome, thanks for letting us know! Glad you got it fixed! -Jim
Looking for a Used TR6 in your area?
CarGurus has 24 nationwide TR6 listings and the tools to find you a great deal.
Search Triumph TR6 Questions
Triumph TR6 Experts
Related Models For Sale