Hello,
I've got a TED20 Petrol/TVO model and after about 30 minutes it will splutter and misfire until it eventually dies. After 15 minutes or so it'll go again but only for another 10-15 minutes before it again dies.
I've done endless searching online and consulted with different people as to the cause - everyone suggests something different but is always good to know opinions.
The following parts have been replaced / changes made
[list:de611c37ee]
New carburetor
Intake / Exhaust manifold (Someone suggested a crack)
New intake / exhaust valves, springs and valve clips
New points
New condensor
New ignition coil
All wiring replaced and contacts cleaned
New ignition switch
New control / regulator box
New distributor cap
New rotor arm
New plugs
New HT leads
Various carb tweaks and changes
New fuel tank (old one was corroded badly and full of rust)
[/list:u:de611c37ee]
The following have been re-calibrated according to the Ferguson manual:
[list:de611c37ee]
Carb main / idle jets
Spark plug gap
Points gap
Tappet / pushrod clearances
[/list:u:de611c37ee]
A bit more info:
Starts and runs absolutely fine, no problems at all on tickover or startup.
Same problem occurs on both straight petrol and TVO.
Before re-doing valves had an episode of major backfiring, redoing the valves seems to have cleared that up (but this only occurred after replacing the carb, as well as after doing the pushrod clearances with the old valves.) Old valves did not appear too badly worn when replaced.
A lot of this work has been carried out over time, e.g. it's been over a year since many of the electrical components were replaced (points, condensor, distributor cap and rotor arm), but all appear fine.
I'm assuming that because the problem only seems to surface when hot, that this is the result of heat spreading to an area and causing something to fail. Given that almost the entire fuel system has been replaced I now suspect the electrical system. However most of this has been replaced as well!
Any ideas / suggestions would be more than welcome - replacing parts is not a problem, but it is rather frustrating to sink money into parts which don't actually solve the issue. (Although many of these components did appear to need replacement anyway).
I've got a TED20 Petrol/TVO model and after about 30 minutes it will splutter and misfire until it eventually dies. After 15 minutes or so it'll go again but only for another 10-15 minutes before it again dies.
I've done endless searching online and consulted with different people as to the cause - everyone suggests something different but is always good to know opinions.
The following parts have been replaced / changes made
[list:de611c37ee]
New carburetor
Intake / Exhaust manifold (Someone suggested a crack)
New intake / exhaust valves, springs and valve clips
New points
New condensor
New ignition coil
All wiring replaced and contacts cleaned
New ignition switch
New control / regulator box
New distributor cap
New rotor arm
New plugs
New HT leads
Various carb tweaks and changes
New fuel tank (old one was corroded badly and full of rust)
[/list:u:de611c37ee]
The following have been re-calibrated according to the Ferguson manual:
[list:de611c37ee]
Carb main / idle jets
Spark plug gap
Points gap
Tappet / pushrod clearances
[/list:u:de611c37ee]
A bit more info:
Starts and runs absolutely fine, no problems at all on tickover or startup.
Same problem occurs on both straight petrol and TVO.
Before re-doing valves had an episode of major backfiring, redoing the valves seems to have cleared that up (but this only occurred after replacing the carb, as well as after doing the pushrod clearances with the old valves.) Old valves did not appear too badly worn when replaced.
A lot of this work has been carried out over time, e.g. it's been over a year since many of the electrical components were replaced (points, condensor, distributor cap and rotor arm), but all appear fine.
I'm assuming that because the problem only seems to surface when hot, that this is the result of heat spreading to an area and causing something to fail. Given that almost the entire fuel system has been replaced I now suspect the electrical system. However most of this has been replaced as well!
Any ideas / suggestions would be more than welcome - replacing parts is not a problem, but it is rather frustrating to sink money into parts which don't actually solve the issue. (Although many of these components did appear to need replacement anyway).