MJGenay
Full Access Member
Gentleman, here's what has been done and what the symptoms are, I'm hoping y'all can help me solidify what this issue may be before I go off half cocked and have a new flywheel put in and the tranny replaced (one bad synchro, one on the way out) in the process.
I have a '91 F250 with a 7.3 IDI (with a Banks turbo installed in February/March I think) and a ZF5. I purchased it in January. Drove it home 700 miles after the purchase; no issues except the one cold start I did (second morning of drive, it was around 30 degrees) had a LITTLE bit of an aggressive rattle that would disappear if I blipped the throttle and completely disappeared as the truck warmed up.
Previous owner claimed to have installed remanufactured IP and injectors within a year of when I bought it. He seemed to have timed it well; when I purchased it he started it up cold in front of me (albeit it was 60 degrees out) but he had been gone the whole day, I arrived before he returned home from work. It gave a puff of black smoke on start then cleaned up immediately and ran well.
At any rate I have had a rattle on cold start that has been progressively getting worse since I purchased it. If the truck is warm, or even kinda warm, the rattle isn't there or it is minimal. If the outside temp is above 60 or so, it is rare for it to have any rattle and it is minimal if it does rattle.
Now we're into the cold weather. I did some work fixing fuel leaks and the glow plug system and now the truck starts reliably in the single digits, however, it rattles like hell.
I've called around and found a shop who will replace the tranny and the DMF with a Luk SMF for $36-3800. Let me be honest here and say that hurts, however, it seems as though I would be close to that myself in parts and special tools if I tried to do it myself.... and didn't screw it up.
I've been through the forum, and all over the internet, and it sounds as though my issue is my DMF although I'm still hoping for a cheaper issue, hopefully one I can fix myself with minimal parts. I pulled the cover off the flywheel and the springs are loose, some looser than others (this was the three or four I could reach). When I say loose they all spin freely, have flat spots worn onto them, and one has almost an inch of back and forth to it, the rest have less than that. What I assume is the pressure plate has about an inch of spin to it.
I'm hoping you gentleman have some insight and experience on this. If it isn't my DMF I would much prefer to put this off as quite frankly this is way out of my budget but I need this truck reliable.
Here is a video of the rattle. I believe the smoke is due to elevation (running rich) and the truck being cold, it clears up when the turbo spools or when the truck is warm. Please ignore the title, at the time I thought it might've been an air in the fuel issue.
Thank you.
I have a '91 F250 with a 7.3 IDI (with a Banks turbo installed in February/March I think) and a ZF5. I purchased it in January. Drove it home 700 miles after the purchase; no issues except the one cold start I did (second morning of drive, it was around 30 degrees) had a LITTLE bit of an aggressive rattle that would disappear if I blipped the throttle and completely disappeared as the truck warmed up.
Previous owner claimed to have installed remanufactured IP and injectors within a year of when I bought it. He seemed to have timed it well; when I purchased it he started it up cold in front of me (albeit it was 60 degrees out) but he had been gone the whole day, I arrived before he returned home from work. It gave a puff of black smoke on start then cleaned up immediately and ran well.
At any rate I have had a rattle on cold start that has been progressively getting worse since I purchased it. If the truck is warm, or even kinda warm, the rattle isn't there or it is minimal. If the outside temp is above 60 or so, it is rare for it to have any rattle and it is minimal if it does rattle.
Now we're into the cold weather. I did some work fixing fuel leaks and the glow plug system and now the truck starts reliably in the single digits, however, it rattles like hell.
I've called around and found a shop who will replace the tranny and the DMF with a Luk SMF for $36-3800. Let me be honest here and say that hurts, however, it seems as though I would be close to that myself in parts and special tools if I tried to do it myself.... and didn't screw it up.
I've been through the forum, and all over the internet, and it sounds as though my issue is my DMF although I'm still hoping for a cheaper issue, hopefully one I can fix myself with minimal parts. I pulled the cover off the flywheel and the springs are loose, some looser than others (this was the three or four I could reach). When I say loose they all spin freely, have flat spots worn onto them, and one has almost an inch of back and forth to it, the rest have less than that. What I assume is the pressure plate has about an inch of spin to it.
I'm hoping you gentleman have some insight and experience on this. If it isn't my DMF I would much prefer to put this off as quite frankly this is way out of my budget but I need this truck reliable.
Here is a video of the rattle. I believe the smoke is due to elevation (running rich) and the truck being cold, it clears up when the turbo spools or when the truck is warm. Please ignore the title, at the time I thought it might've been an air in the fuel issue.
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Thank you.