Twoinone

Thanks for the advice. I'll recheck the ignition circuits and wiring. Other than the change to the Weber, everything's stock on the engine. Being a little used motorhome the vehicle has only 43,000 original miles on it. Again, I've only had the rig a few months and been working on cosmetics mostly. If memory serves me, it ran beautifully until the mechanic retarded my timing to stop the dieseling. It may be that I just haven't got it back to the original setting yet. Slightly fast at idle, but starts in a snap, good economy (15 mpg) and sounds great...just the darned bucking at upper rpm in any gear, particularly uphill inclines. Will keep y'all posted on my progress. Sure glad this site was recommended to me by the kid at Auto Zone who has a Z24 in his car.

I recently came into a sort of weird ratsun motorhome. It's a 21 footer and I did extensive work to bring it to like new condition. The title says its a 1984 Datsun pickup but it's registered as a 1985 Nissan GranVille motorhome...it wears Nissan logos. I'm told the pickup was manufactured in 1984 as a Datsun then shipped to Elkhart IN where it was converted to a 1985 motorhome. In any case, after all the body and structure work I decided to bring it to a mechanic because of a dieseling problem. He told me he retarded timing 10 deg. Now it starts to buck in the high range of any of its 5 gears, especially uphill. I set the timing to its original mark (up 10) and the bucking diminished but still there some. I've been reading the above which is way beyond my expertise, but is my problem timing/camshaft as well. All wires and plugs are new and the previous owner had the original carb replaced with a Weber 2bbl. Should I advance the timing further or is the bucking/loss of power inherent in ths engine? Thanks in advance for your advice.