Jdtractorman123
Member
I have been rebuilding a 330 engine the last month. Long story but had this block machined .45 over , magnifluxed, dipped, etc. same goes for the head dipped, checked for leaks, new valves, seats, s
springs,and guides, spared no expense or shortcuts on this nice tractor. The engine ehen I got it had spun a rod and had two teeth broken on the governor. So with that I got another camshaft gear with same part number and installed on the old cam this was inspected and ok. When I reassembled the bottom. End I put both the crank and camshaft gear in time( so I thought ) with the little dots the size on a pencil head online together. Had. H dad confirm I wasn't crazy or wrong. Then the finish assembly was done exactly as factory Deere repair manaual said. Ben had a speciality tool for timing the oil pump with the distributor . I followed the correct instructions and the short side of slot facing out with the flat side of tool facing out to ensure it was in time. I have the clave cover off at this time and from here on. Set the valve lash at .12 by book which seemed tight to me. Then checked for spark and fixed a few loose connections then got fire. Off to fuel put fuel in and verified the bowl was fuel. The proceeded to turn ending over on choke with nothing. Pulled plug to see no fuel on it. So I out my hand on intake breather only to have compression blowing out instead of suction.....! Puzzled by this I thought maybe a valve was sticking . Nope.. Then I thought maybe they weren't seating properly. With inspection camera it they looked ok.. Puzzled again... So I tried a,compression test and both cylinders show 25psi!!!! How could that be with new Pistons, rings, and new bore .45 over. Rings were staggered properly and cylinders oiled down. So I looked at the flywheel and verified TDC on number one and it shows to be correct. I am really puzzled here cause I know the cam gear only goes one way and I never took the crank gear off. I did out another cam gear on camshaft but it had same part number off an mt tractor. My does however use a diff cam which I quickly saw. I did however see what looked like somebody had hit or dropped the cam gear and left a ding on same side as timing mark. I thought it looked funny and not factory . Also by the size of dent not matching the crankshaft one I quickly Matched it up with other mark.. Looked like one in book. Something is wrong here but I'm not sure what to do next . I'm afraid the camshaft is somehow out of time but how!?? Anybody had this problem with blowing back intake and no fuel in combustion chamber.
springs,and guides, spared no expense or shortcuts on this nice tractor. The engine ehen I got it had spun a rod and had two teeth broken on the governor. So with that I got another camshaft gear with same part number and installed on the old cam this was inspected and ok. When I reassembled the bottom. End I put both the crank and camshaft gear in time( so I thought ) with the little dots the size on a pencil head online together. Had. H dad confirm I wasn't crazy or wrong. Then the finish assembly was done exactly as factory Deere repair manaual said. Ben had a speciality tool for timing the oil pump with the distributor . I followed the correct instructions and the short side of slot facing out with the flat side of tool facing out to ensure it was in time. I have the clave cover off at this time and from here on. Set the valve lash at .12 by book which seemed tight to me. Then checked for spark and fixed a few loose connections then got fire. Off to fuel put fuel in and verified the bowl was fuel. The proceeded to turn ending over on choke with nothing. Pulled plug to see no fuel on it. So I out my hand on intake breather only to have compression blowing out instead of suction.....! Puzzled by this I thought maybe a valve was sticking . Nope.. Then I thought maybe they weren't seating properly. With inspection camera it they looked ok.. Puzzled again... So I tried a,compression test and both cylinders show 25psi!!!! How could that be with new Pistons, rings, and new bore .45 over. Rings were staggered properly and cylinders oiled down. So I looked at the flywheel and verified TDC on number one and it shows to be correct. I am really puzzled here cause I know the cam gear only goes one way and I never took the crank gear off. I did out another cam gear on camshaft but it had same part number off an mt tractor. My does however use a diff cam which I quickly saw. I did however see what looked like somebody had hit or dropped the cam gear and left a ding on same side as timing mark. I thought it looked funny and not factory . Also by the size of dent not matching the crankshaft one I quickly Matched it up with other mark.. Looked like one in book. Something is wrong here but I'm not sure what to do next . I'm afraid the camshaft is somehow out of time but how!?? Anybody had this problem with blowing back intake and no fuel in combustion chamber.