nelle

When I had a B2B pilothouse there was plenty of leg room. I am 6'2". Then I got a 47 WD-20 and the cab dimensions are all considerably smaller and a lot less leg room. I left the seat bottom as is. I took the back off and replaced it with wooden seat back. Presently there is no cushioning at all and it is pretty comfortable. I may or may not put 1 inch of foam and upholster it. But it works just fine and I have 6 more inches of room.

It has been a while since I asked the group about an engine problem. Many good replies. It ended up being a fuel delivery problem as some of you suggested. For some unknown reason, once the engine was fully hot, the fuel pump stops working. New fuel pump seems to have solve the problem. I am still puzzled about exactly what caused the pump to fail at high temp but glad to be back on the road. Thanks for all of your suggestions. - Steve

Thank you Mr Neal. I cannot duplicate the problem in the driveway. I have tried. Runs fine in driveway even at approx engine speed when the problem occurs. Must be a difference when under load vs no load. It puzzles me why the issue only happens after driving 2 miles. No problem at all getting to the 2 mile point running at 40 and with several starts and stops.

Jeff - thank you for the reply regarding carb and fuel delivery. I did not rebuild or even clean the carb that is on there now. However, this funny problem is happening exactly the same for both the old carb and this one. The first was a Stromburg and the current one is a Carter Ball and Ball. Since they do the same thing I can't imagine that it is a carb issue. However I know I should clean and rebuild.I know I will get scolded on this but the only filter in the system is the glass settling bowl and fine screen at the mechanical fuel pump. I need to add a filter. However, since this problem does not happen until 2 miles from the house, it seems there must be another issue besides lack of filter. But I am going to do as you suggest.

Thank you for that suggestion. This is the original gas cap and the air vent is present and not plugged. I did have that same problem on my 1950 B2B which I sold last year.

Yes regarding spring on points, it was a bit tricky getting the spring and the copper element in the right position (did all of this with dist installed). I can try to check spring tension but it seems pretty tight to my "finger gauge". In fact the first set Blue Streak I bought only lasted a few miles before one of the contact tabs broke off and left me stranded. I suppose the quality of these parts is not as good as we remember from the old days. Second set has held up.

Oil pressure is 40+ and water temp is something like 150 when this happens. the engine runs cool, probably too cool and I know I need to check the thermostat to see if it is stuck open. These are both after market gauges. I would love to get original oil and temp gauges into this truck. I suppose there are a hundred guys who want the same thing - hard to find.

Springs on mechanical advance - not I have not checked them, nor have I even opened that compartment up. Yes it seems to run fine at 40 until I have driven about 2 miles, then the problem begins abruptly. Slow down and I can make it home @ 30 mph.

Thank you for the suggestions regarding wire from coil to distributor and then inside to breaker unit. All appears sound and same problem persists. Plug wires look good externally but I wonder if they can be cross firing since some of the wires are longer than they need to be and cross each other.

Jeff - thank you for that suggestion. I had previously rebuilt the fuel pump and it has run good after that. As far as fuel line collapse, there are only two short segments of rubber line and those appear to be in good shape, not flimsy or thin. Steel line is sound, no kinks. Why would this miss be so regular (two jerks per second) while going 40 mph, but then go away as you ease off the gas - but this is only after driving 2 miles or so. Seems strange to me.

Thanks JB. Will try that. I cannot reproduce the miss when the truck is idling. Only when going 35 or 40 after it gets fully warmed up.

I am having a strange problem with 230 flathead in my 47 WD-20. After have driven about 1 or 2 miles from the house, engine starts jerking in a regular rhythm of about 2 jerks (misses) per second when going about 35 or 40. Strangely, it does not do this consistently. Some days it has run just fine for 5 or 10 mile trips. Here is what I have done so far to try to alleviate the problem: check for debris in gas tank (none); drained and examined fuel in tank (clean) put on spare carb I had; put on different coil; replace plugs; replace points / condenser. Still starts the jerky rough running after 1 or 2 miles. It has me perplexed. I'm not a good mechanic like a lot of you guys but would like to figure this out. Distributor has mechanical advance. Perhaps will try new plug wires next. Any help or ideas appreciated. Steve