2L type 4 engine auto box. Standard carbs. Been running fine all around Dorset and Devon, over 300 miles covered. Went out this morning and the road out of the camp is a 3 mile steep downhill....engine didn't feel quite right, but put in down to almost freewheeling for the first few miles imediately from starting up. All the way to our destination, she felt like she was " hunting" and didn't want to tick over. In car park at Exmouth I checked all various wires to carbs and tweaked idle screw on left hand carb to make her driveble around town. Coming back to site no real improvement.... ever lead, connection and lead checked without any improvement Any suggestions besides " get a T5" would be appreciated as I'm due to move on tomorrow, but might be trying to get home!
sorry no helpful advice from me as im clueless. hopefully some will come up with suggestions of what to check
Is it firing on all cylinders? Have you got a reliable spark? Could be a duff plug, a dodgy HT lead etc etc. have you got a fuel filter? If so is it clean?
Clean fuel filter and doesn't feel to be running on 3. After a bit of checking, she appears to have more power...the lag between pressing pedal and anything happening remains. Pedal parts all replaced with Buttys Bits and throttle cable ok.
Have you got a spare pair of points and condenser? Could well be faulty electronic ignition. No longer the fit and forget option.
Yes I have. Strange that it's worked fine on a long hot journey yet went faulty on immediately on start up on a cool day.
A long shot but have you checked the plugs? If you have a few miles on the engine and the valve guides are worn, running on overrun (down hill, no throttle) causes a partial vacuum in the combustion chamber and inlet manifolds which, with worn guides, can result in oil being drawn in and fouling the plugs. Those of a certain age will well remember the late 70' Polos and Golfs used to suffer with hardened valve stem seals and worn guides. After a prolonged descent, when you put your foot down a huge plume of oil smoke would issue from the exhaust as the sucked in oil got burned off.
It feels more fuel related....particularly as I'm not convinced that the chokes always bother to work .
I would try points, but but if you think No3 is not firing, check spark plug leads are well on. If you can take a look at the plugs it may show if the oil fouling idea is true.
Warm it up and look down the carbs. If the butterflies are open it’s fine. There’s no rhyme or reason to electronic ignition modules failing. What fuel pump by the way?
I cooked my electronic ignition on a long hot drive one time. It didn’t evidence in the same way as you are describing but it is possible for them to just Develop an intermittent fault with no prior warning. Sent from my iPhone using Tapatalk
All that down hill, foot off the pedal, very high manifold vacuum, throttle action now lagging pedal. Check your manifold servo vacuum elbows.
My guess would be choke(s) related as you suggested , based on the fact you "almost freewheeled" th first few miles ... Give it a good ragging to make sure the chokes are off and see if that helps ??
