ferrellmedia
Full Access Member
1993 F350 DRW crew cab
original engine was a 7.3 idi n/a
rebuild is a 7.3 idi n/a
First, I know this is long winded and detailed, but I think I need to be for you guys to be of asistance.
OK, I bought this rebuild without fully knowing all that was done to it, the shop was closing down, owner had passed and bought the rebuild from his family who was liquidating the shop. So not really sure what I got for my 1500.00.
I used my new/rebuilt standadyne pump from my original engine which was purchased and installed at the local ford dealer and used my standyne "E" code injectors from my original truck with 147k.
My orig engine cavitated back pass cylinder and caused it to bend a rod.
Prior to dropping this unknown rebuild it the truck, I flushed the block, which I found to have serious laquer / shelac built up behind the water pump.
Pulled the entire front of engine off, new water pump (from the stealership), dipped the intake, cleaned up perfectly, new injector copper seals, double checked tourque on all the rocker arms and entire bottom end, new valve cover gaskets and generally have it looking like a brand new international str8 from the factory.
It's been running REALLY strong, getting around 17mpg around town and been used as my daily driver.
Then, I sold my sandrail to a guy about an hour south of me and I delivered it to him. This was the first time in a while I had the truck on the interstate with any load.
I had the truck running around 2300 - 3000 RPMS steady for that hour, oil pressure always perfect, idiot temp gauge always at the "O" in normal, temp gauge never moves once warmed up, truck was two quarts low of oil on this trip and I didn't know.
Drove it hard with the sand rail in tow, (an extremely light load), pulling the sandrail the 1 hour south, truck ran great, no issues.
Then, when I get off the interstate and come to the red light I hear the new friggin "tick, tick, tick, tick" a completely new tick.....it's a tick on the boarder line of sounding like a knock...
The sound disapears for a minute under the initial loading of the engine, then comes back and is loudest at idle. Absolutely no miss, and no smoke either blue or black.
I devliered the sandrail then rolled over to kmart to check oil and added the two quarts it was low hoping this was it, and Still ticking.....
I then ran a quart of ATF thru the back tank in hopes that it was an injector knock, no luck. I've driven it approx another 200 miles since the day I delivered this rail and it's not gotten any worse, but it's not getting any better.
I initially thought this had to be a bad lifter or broken rocker arm or loose rocker arm, something in the valve train.
Then today I pulled the valve covers.
I double checked and none of the rocker arms seems to be loose, and then I used a stethescope on each rocker with the engine running and the sound on each rocker arm is EXACTLY the same, so that tells me it's not a lifter issue, correct?
It sounds like it's originating from the bottom end, like a wrist pin or rod???
I then pulled the dust cover thinking this could possibly be the flexplate and or the torque converter bolts, I validated the converter bolts, tightened all four then visually inspected the flexplate and nothing of notice....
HOWEVER, using the stethescope, the sound seems to be the loudest when placed on the housing of the transmission????? I just dont understand this unless it's either in the trans or this is the rod/main ticking and I can here it thru the trans housing because the trans is bolted to the block and crank???
The tick, tick tick, seems to be coming either from the bottom end and or the front of the engine, and I cannot say for certian if it's from the crankcase area or not, very difficult to determine location. The reason I say the front of the engine is when I use the stethescope on the front gear housing I can hear the tick slightly louder...
I took the truck to a local bus maint shack yesterday and the guy says it sounds normal, however, this is a BRAND NEW tick, tick, tick that never showed itself ....and not normal, this guy is not very good.
This rebuild has been running for 3 months now every day and has 2k miles since it was dropped in, if this was a normal "tick, tick, tick.." it would have always been present and this is brand new.
I will drain the oil tomorrow in an attempt to see if there are shavings of note, but other than what i've listed here, are there other forensics I can do? suggestions? someone knows exactly what this is based on this description?
original engine was a 7.3 idi n/a
rebuild is a 7.3 idi n/a
First, I know this is long winded and detailed, but I think I need to be for you guys to be of asistance.
OK, I bought this rebuild without fully knowing all that was done to it, the shop was closing down, owner had passed and bought the rebuild from his family who was liquidating the shop. So not really sure what I got for my 1500.00.
I used my new/rebuilt standadyne pump from my original engine which was purchased and installed at the local ford dealer and used my standyne "E" code injectors from my original truck with 147k.
My orig engine cavitated back pass cylinder and caused it to bend a rod.
Prior to dropping this unknown rebuild it the truck, I flushed the block, which I found to have serious laquer / shelac built up behind the water pump.
Pulled the entire front of engine off, new water pump (from the stealership), dipped the intake, cleaned up perfectly, new injector copper seals, double checked tourque on all the rocker arms and entire bottom end, new valve cover gaskets and generally have it looking like a brand new international str8 from the factory.
It's been running REALLY strong, getting around 17mpg around town and been used as my daily driver.
Then, I sold my sandrail to a guy about an hour south of me and I delivered it to him. This was the first time in a while I had the truck on the interstate with any load.
I had the truck running around 2300 - 3000 RPMS steady for that hour, oil pressure always perfect, idiot temp gauge always at the "O" in normal, temp gauge never moves once warmed up, truck was two quarts low of oil on this trip and I didn't know.
Drove it hard with the sand rail in tow, (an extremely light load), pulling the sandrail the 1 hour south, truck ran great, no issues.
Then, when I get off the interstate and come to the red light I hear the new friggin "tick, tick, tick, tick" a completely new tick.....it's a tick on the boarder line of sounding like a knock...
The sound disapears for a minute under the initial loading of the engine, then comes back and is loudest at idle. Absolutely no miss, and no smoke either blue or black.
I devliered the sandrail then rolled over to kmart to check oil and added the two quarts it was low hoping this was it, and Still ticking.....
I then ran a quart of ATF thru the back tank in hopes that it was an injector knock, no luck. I've driven it approx another 200 miles since the day I delivered this rail and it's not gotten any worse, but it's not getting any better.
I initially thought this had to be a bad lifter or broken rocker arm or loose rocker arm, something in the valve train.
Then today I pulled the valve covers.
I double checked and none of the rocker arms seems to be loose, and then I used a stethescope on each rocker with the engine running and the sound on each rocker arm is EXACTLY the same, so that tells me it's not a lifter issue, correct?
It sounds like it's originating from the bottom end, like a wrist pin or rod???
I then pulled the dust cover thinking this could possibly be the flexplate and or the torque converter bolts, I validated the converter bolts, tightened all four then visually inspected the flexplate and nothing of notice....
HOWEVER, using the stethescope, the sound seems to be the loudest when placed on the housing of the transmission????? I just dont understand this unless it's either in the trans or this is the rod/main ticking and I can here it thru the trans housing because the trans is bolted to the block and crank???
The tick, tick tick, seems to be coming either from the bottom end and or the front of the engine, and I cannot say for certian if it's from the crankcase area or not, very difficult to determine location. The reason I say the front of the engine is when I use the stethescope on the front gear housing I can hear the tick slightly louder...
I took the truck to a local bus maint shack yesterday and the guy says it sounds normal, however, this is a BRAND NEW tick, tick, tick that never showed itself ....and not normal, this guy is not very good.
This rebuild has been running for 3 months now every day and has 2k miles since it was dropped in, if this was a normal "tick, tick, tick.." it would have always been present and this is brand new.
I will drain the oil tomorrow in an attempt to see if there are shavings of note, but other than what i've listed here, are there other forensics I can do? suggestions? someone knows exactly what this is based on this description?
