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I just did an low end job on my 1993 ford f250 7.3 liter deisel pickup which means i replaced the rods, mains, and oil pump in the engine. i lined the gear timing marks up on the crank, cam, and fuel pump gears. and now when it starts it cranks fine but it smokes like its getting way too much fuel and it idles really rough. it was running fine before i did the job with my dad but it was loosing oil pressure. now that i done this to the engine it has great oil pressure but runs rough until you get it up to a hight rate of rpms the higher the rpms the smoother it runs. so can you tell me what could be going wrong? i did notice one thing about the cam shaft gear though. the timing mark on the cam shaft gear that aligns with the fuel pump gear is not directly across from the cam shaft gear that aligns with the crank shaft gear.

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Out of timing

Posted on Jan 03, 2011


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Where is the oil pump on a 318,1992 dodge ram 1500

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You may have to drop the tie rod or sway bar to get it out. Check the oil pick-up screen for blockage. If it is clear, check the oil pump for excess play. Replace if needed. If the screen is blocked, clean it by soaking in solvent, replace the oil pump, drop the rod and main bearing caps and examine the crank bearing surfaces. If they are in good condition, you can buy .001" undersized bearings. Lubricate generously and reassemble. Torque to the correct setting, then put the pan back on. This job can be done by one or two moderately skilled back yard mechanics if supplied with a case of beer.

If the bearing surfaces are scarred, take the crankshaft out and take it to a machine shop. You are going to have to take out the timing chain on the front end and unbolt the torque converter or flywheel from the back end of the crank. This job requires a good bit more skill, so unless you have an expert mechanic on speed dial, take it to a shop.

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