justin_mercier
Jedi Warrior
Offline
I picked up a TR7 just over a week ago and it has one problem which I have not been able to figure out myself. When steppping on the gas the engine hesitates / stalls / misfires. Stepping on the gas slowly to rev it up the engine purrs happily, but step down on the gas quickly or with any pressure and it breaks up.
Here's a pair of audio clips that I've uploaded to youtube.
First vid is with a cold engine, having just started it up (water choke has it idling around 1500 when first starting up). when you hear it rev up smoothly is when I'm stepping very slowly on the gas, i then stomp on the gas a couple times and stall the engine out completely.
https://www.youtube.com/watch?v=XbPv4AwnobU
Second video is after letting the engine warm up enough that the auto choke has slowed the idle down (still idles fast, around 1000) just stepping on the gass and letting off, and then stepping on the gas and holding it for a minute, you can hear the engine BUP BUP BUP
https://www.youtube.com/watch?v=TCN770Uy-qY
Today after dealing with the repair shop and picking up my pickup truck after they fixed collision damage, I went and bought a compression tester and figured that I would check the plugs and compression first just to make sure I couldn't determine anything mechanically wrong. Compression looks pretty close on all cylinders, a hair lower on 1 and 2 than 3 and 4, but all within range of eachother.
Cyl 1
Cyl2
Cyl3
Cyl4
The plugs look fine to, the 4th plug looks like the other 3, but the angle of the photo isnt showing the 'clean' side so it looks dirtier, but they're all about the same.
The carbs are brand new from Jeff at Paltech last summer, as are the points and rotor, ignition wires, and plugs.
Here's a pair of audio clips that I've uploaded to youtube.
First vid is with a cold engine, having just started it up (water choke has it idling around 1500 when first starting up). when you hear it rev up smoothly is when I'm stepping very slowly on the gas, i then stomp on the gas a couple times and stall the engine out completely.
https://www.youtube.com/watch?v=XbPv4AwnobU
Second video is after letting the engine warm up enough that the auto choke has slowed the idle down (still idles fast, around 1000) just stepping on the gass and letting off, and then stepping on the gas and holding it for a minute, you can hear the engine BUP BUP BUP
https://www.youtube.com/watch?v=TCN770Uy-qY
Today after dealing with the repair shop and picking up my pickup truck after they fixed collision damage, I went and bought a compression tester and figured that I would check the plugs and compression first just to make sure I couldn't determine anything mechanically wrong. Compression looks pretty close on all cylinders, a hair lower on 1 and 2 than 3 and 4, but all within range of eachother.
Cyl 1
Cyl2
Cyl3
Cyl4
The plugs look fine to, the 4th plug looks like the other 3, but the angle of the photo isnt showing the 'clean' side so it looks dirtier, but they're all about the same.
The carbs are brand new from Jeff at Paltech last summer, as are the points and rotor, ignition wires, and plugs.