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Motor knock after motor swap


00srad600

Well-Known Member
Joined
Dec 24, 2011
Messages
109
City
Scenery hill pa
Vehicle Year
1992 1989
Transmission
Manual
Ok so I pulled the motor tranz and tcase all in one motor ran fine changed the intake gasket valve cover gaskets and dropped it into 88 frame had a fuel problem swapped out the old rusted metal tank for the tank in my 89 deleted the frame pump and just running the high pressure in tank pump I got 40 psi to the rail truck starts but won't rev over 1100 rpm back fires and has a knock motor ran fine before I pulled it I dont know what it can be I set it in time got good compression I'm lost at this point any ideas
 
what was the reason to remove the low side pump. prob wont rev past 1100rpm because its has to much fuel
 
The metal tank was no good and the tank and pump ran the motor in the other truck and the fuel pressure regulator would stop that and I found out why it won't rev with my timing light it loses spark after you hit the gas and now im even more clueless i just put a new distbutor and mod in in when it was in the other truck with a msd coil and i swaped the computer over
 
Oh forgot to say motor won't run if spout connector is in but will if it's out
 

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