Ever since I have owned my Tiger the car has suffered with stuttering at high revs/load. It is fine below around 4000rpm/three quarters throttle.
I've changed most components on the ignition and fitted a new Holley 1850s carb. It has a 289 with a Torquer 289 inlet manifold.
Today the car started running very badly to say the least: it was barely drivable and wouldn't idle below 3000rpm. But, the running problems at high revs disappeared, I mean the car went like it has never gone before over 4000rpm. I was changing up at 5200rpm (an engine speed I've never managed to attain) for fear of damaging the engine, even though it was still pulling well.
When looked into why the car was running so badly at lower revs the cause was obvious. I had wired the manual choke mechanism on the Holley open and this had come loose, allowing the choke flap to cover the primary barrels so basically I was just running on the secondary barrels.
So I'd be very grateful if anyone could tell me why was the engine running so well at high revs on just the secondaries.
Thanks
I've changed most components on the ignition and fitted a new Holley 1850s carb. It has a 289 with a Torquer 289 inlet manifold.
Today the car started running very badly to say the least: it was barely drivable and wouldn't idle below 3000rpm. But, the running problems at high revs disappeared, I mean the car went like it has never gone before over 4000rpm. I was changing up at 5200rpm (an engine speed I've never managed to attain) for fear of damaging the engine, even though it was still pulling well.
When looked into why the car was running so badly at lower revs the cause was obvious. I had wired the manual choke mechanism on the Holley open and this had come loose, allowing the choke flap to cover the primary barrels so basically I was just running on the secondary barrels.
So I'd be very grateful if anyone could tell me why was the engine running so well at high revs on just the secondaries.
Thanks