Davidson750

The kehein 43's and 42's (750/900)all have accelerator pumps. I live in Dallas Texas very hot very dry I have to fatten up everything on...

We've been doing .005 intake and exhaust... factory specs are a little tight as I mentioned earlier...750s are known for running...

If not carbs,rings..were the gapped?.. installation went smoothly?... I use a second pair of hands if available ,and I made blocks to...

I completely understand... I'm thinking more carburetor.. when you did Jets and the rebuild,.. did you use genuine kehein(jets,etc)...

Seems like you got it covered.. you could check valve clearances.. go through and look for any big discrepancies... .005 intake/exhaust

Yes most of those tanks for those years are interchangeable.. my cb750f tank holds a little over 5 gallons... That's a lot of riding...

Swap your plugs around or try a new plug and see if it still happens I've had bad plugs out of the box before sometimes we overthink things.

Are you using aftermarket bowl gaskets?..where is the fuel coming from?. unfortunately some aftermarket rebuild kits are not that...