No Power after head gasket replacement
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Joined: Jan 2008
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No Power after head gasket replacement
Hi All,
Long time lurker, first time poster.
Have a '93 D-350 that we just put a head gasket on due to water leakage at the front passenger side corner. After reassembly, the truck started and ran, but wouldn't build RPM. Currently the truck will build RPM when warm, but barely has enough power to pull it back in the shop. My buddy has bled all the lines per the FSM, and we've looked it over for obvious air leaks, etc... there must be something newbies would miss - any help?
Will share more info once we get the old girl sorted out.
Thanks,
Steve Charette
93 D-350 CTD 5 spd
Long time lurker, first time poster.
Have a '93 D-350 that we just put a head gasket on due to water leakage at the front passenger side corner. After reassembly, the truck started and ran, but wouldn't build RPM. Currently the truck will build RPM when warm, but barely has enough power to pull it back in the shop. My buddy has bled all the lines per the FSM, and we've looked it over for obvious air leaks, etc... there must be something newbies would miss - any help?
Will share more info once we get the old girl sorted out.
Thanks,
Steve Charette
93 D-350 CTD 5 spd
Thread Starter
Registered User
Joined: Jan 2008
Posts: 2
Likes: 0
No smoke at all, it's always been pretty smoke-free (must be time to turn it up, huh?)
Valves were set at .010" on the intake and .020 on the exhaust, per the Cummins B-Series FSM. We went back and checked again just in case, although I can honestly say we did not use the timing pin to locate the crank, just rotated the motor to get to the cam base circle. The motor fires immediately when the key is turned, and runs smooth.
It just doesn't make enough power to fall out of a tree...
Read posts from here and a couple other sites last night until I couldn't see straight. Tonight we'll be checking the following:
1. Intercooler tubing and boots
2. Exhaust obstructions
3. Electrical connections to FI pump
Does a '93 have a throttle position sensor? What about a crank sensor??
Also, there are three wires going to the FI pump... the one that looks like an oil sending unit has a loose connection that we'll replace tonight as well. If I understand correctly, that one senses oil pressure and limits engine RPM if oil pressure is low? And the other two are just for shut-down??
Thanks for the help all, I really appreciate it. My buddy has been pretty understanding about this thing plugging up his shop, but he's got work stacking up and I gotta get her out of there.
Thanks again,
Steve
Valves were set at .010" on the intake and .020 on the exhaust, per the Cummins B-Series FSM. We went back and checked again just in case, although I can honestly say we did not use the timing pin to locate the crank, just rotated the motor to get to the cam base circle. The motor fires immediately when the key is turned, and runs smooth.
It just doesn't make enough power to fall out of a tree...
Read posts from here and a couple other sites last night until I couldn't see straight. Tonight we'll be checking the following:
1. Intercooler tubing and boots
2. Exhaust obstructions
3. Electrical connections to FI pump
Does a '93 have a throttle position sensor? What about a crank sensor??
Also, there are three wires going to the FI pump... the one that looks like an oil sending unit has a loose connection that we'll replace tonight as well. If I understand correctly, that one senses oil pressure and limits engine RPM if oil pressure is low? And the other two are just for shut-down??
Thanks for the help all, I really appreciate it. My buddy has been pretty understanding about this thing plugging up his shop, but he's got work stacking up and I gotta get her out of there.
Thanks again,
Steve
Registered User
Joined: May 2005
Posts: 2,510
Likes: 1
From: Belvidere, NJ
No smoke at all, it's always been pretty smoke-free (must be time to turn it up, huh?)
Valves were set at .010" on the intake and .020 on the exhaust, per the Cummins B-Series FSM. We went back and checked again just in case, although I can honestly say we did not use the timing pin to locate the crank, just rotated the motor to get to the cam base circle. The motor fires immediately when the key is turned, and runs smooth.
It just doesn't make enough power to fall out of a tree...
Read posts from here and a couple other sites last night until I couldn't see straight. Tonight we'll be checking the following:
1. Intercooler tubing and boots
2. Exhaust obstructions
3. Electrical connections to FI pump
Does a '93 have a throttle position sensor? What about a crank sensor??
These have no effect on engine power output, the pump is of mechanical nature.
Also, there are three wires going to the FI pump... the one that looks like an oil sending unit has a loose connection that we'll replace tonight as well. If I understand correctly, that one senses oil pressure and limits engine RPM if oil pressure is low? And the other two are just for shut-down??
One wire is 'hot' when the key is on, this should be blue, this wire is used for shut down. The other wire that come off of there goes to a sensor in the intake that is closed when the temp is below xx*F. The other wire goes to the other solenoid and is the KSB. There are no provisions for oil pressure shutdown on these engines the way they are installed in our trucks.
Thanks for the help all, I really appreciate it. My buddy has been pretty understanding about this thing plugging up his shop, but he's got work stacking up and I gotta get her out of there.
Thanks again,
Steve
Valves were set at .010" on the intake and .020 on the exhaust, per the Cummins B-Series FSM. We went back and checked again just in case, although I can honestly say we did not use the timing pin to locate the crank, just rotated the motor to get to the cam base circle. The motor fires immediately when the key is turned, and runs smooth.
It just doesn't make enough power to fall out of a tree...
Read posts from here and a couple other sites last night until I couldn't see straight. Tonight we'll be checking the following:
1. Intercooler tubing and boots
2. Exhaust obstructions
3. Electrical connections to FI pump
Does a '93 have a throttle position sensor? What about a crank sensor??
These have no effect on engine power output, the pump is of mechanical nature.
Also, there are three wires going to the FI pump... the one that looks like an oil sending unit has a loose connection that we'll replace tonight as well. If I understand correctly, that one senses oil pressure and limits engine RPM if oil pressure is low? And the other two are just for shut-down??
One wire is 'hot' when the key is on, this should be blue, this wire is used for shut down. The other wire that come off of there goes to a sensor in the intake that is closed when the temp is below xx*F. The other wire goes to the other solenoid and is the KSB. There are no provisions for oil pressure shutdown on these engines the way they are installed in our trucks.
Thanks for the help all, I really appreciate it. My buddy has been pretty understanding about this thing plugging up his shop, but he's got work stacking up and I gotta get her out of there.
Thanks again,
Steve
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