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Dave Thompson jr 12-30-2012 09:03:04 64.184.126.173 Report to Moderator	It runs perfect at an idle doesnt smoke had good compression. when going down the road it has good power in 1st and 2nd looses it in 3rd and nothing in 4th. I advanced the timing until it started hard then backed it off a little. There is no timing marks on the balancer or the front cover to set it with a light. The only other thing is that it possibly isnt getting enough fuel when going down the road. It is a very simple carbuerator and cant see anything wrong with it. It is not my truck it is a friend who bought it to haul firewood with and got in to a mess with it. Any ideas why it wont run when it gets under a load. The fuel pump seems to be working fine. Maybe make an adjustment to the float in the carbueraor. Any Ideas [Reply]   [No Email]
rustred 12-30-2012 11:46:37 70.28.245.91 Report to Moderator	Re: 235 chevy engine in reply to Dave Thompson jr, 12-30-2012 09:03:04   all depends what u mean by wont run under load. with a load of grain on them and you wont get them out of first gear on field. like does it cut out , lack power or? have you checked the fuel pump flow? disconnect from carb and crank over engine should have good strong full flow into a jug or such thing. if it just coming out lazely then pump is at fault. lot of these also had the sediment bowl at carb inlet with a filter in them. others had inline filters installed. check that also. [Reply]  [No Email]
tvman 12-30-2012 10:47:34 207.254.175.106 Report to Moderator	Re: 235 chevy engine in reply to Dave Thompson jr, 12-30-2012 09:03:04   dave to set timing look at rear of engine there is hole in bell housing about 1 1/2 inches usually with a pointer in on passenger side turn off engine, then by handturn it and there is ball or timing mark on fywheel note this a white out marker or some thing you can see after starting engine run it as slow a possibe set timing with light to aline up with pointer then speed it up and see if it moves if it is alined and moves that is about all you can do like the other gentleman said this engine was not a ball of fire hope you can get tvman [Reply]  [No Email]