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Engine turns over BUT
Posted: Tue Jun 07, 2022 9:52 am
by Isuzustorm
Engine turns over but seems to get hung up a bit. Wondering ideas of what to look for. Pulled plugs, turns over nice until it hits a spot and takes a bit extra to get passed this spot but does. Would a sticky valve or push rod do this?
Re: Engine turns over BUT
Posted: Tue Jun 07, 2022 11:17 am
by martincom
Is this a new issue from a running engine? Are you turning it over by hand (via breaker bar on dampener bolt) or with the starter when you state it turns nicely?
Re: Engine turns over BUT
Posted: Tue Jun 07, 2022 11:33 am
by PwrWgnDrvr
Isuzustorm wrote: ↑Tue Jun 07, 2022 9:52 am
Engine turns over but seems to get hung up a bit. Wondering ideas of what to look for. Pulled plugs, turns over nice until it hits a spot and takes a bit extra to get passed this spot but does. Would a sticky valve or push rod do this?
No way a valve would do that. I had a 318 in a 64 a few yrs ago that did that. It was a rod bearing that had spun and one half would slip behind the other causing it to wedge up and jam the rotation.
Re: Engine turns over BUT
Posted: Tue Jun 07, 2022 11:48 am
by Isuzustorm
Just got the truck, was told it would run - which means nothing - plugs out, turning via fan. Starter turns it over no issue without plugs, with plugs seemed to struggle. The rod bearing sounds possible.
Re: Engine turns over BUT
Posted: Tue Jun 07, 2022 12:34 pm
by dodgeboykim
Isuzustorm wrote: ↑Tue Jun 07, 2022 11:48 am
Just got the truck, was told it would run - which means nothing - plugs out, turning via fan. Starter turns it over no issue without plugs, with plugs seemed to struggle. The rod bearing sounds possible.
Still could be starter related. Bad cables/connections. Poor starter. Battery weak maybe. What starter does it have. Automatic with gear reduction or standard with direct drive. Year specific for direct drive.
Re: Engine turns over BUT
Posted: Tue Jun 07, 2022 12:43 pm
by Isuzustorm
Direct drive, starter looks newer, running straight off a boost pack as battery was completely toast.
1967 fargo - 318 poly.
Re: Engine turns over BUT
Posted: Tue Jun 07, 2022 1:03 pm
by dodgeboykim
Isuzustorm wrote: ↑Tue Jun 07, 2022 12:43 pm
Direct drive, starter looks newer, running straight off a boost pack as battery was completely toast.
1967 fargo - 318 poly.
Doesn't discount it being faulty under load.
Re: Engine turns over BUT
Posted: Tue Jun 07, 2022 4:21 pm
by PwrWgnDrvr
Rotate the engine by hand using a breaker bar and socket on the vibration damper bolt, plugs out. If you don't fell the spot that hangs up, then its probably the starter.
Get a good battery and try that first. You'll need one eventually anyway. If not, borrow one from your other vehicle. Remove the bad battery as it is a drain on your boost pack or jumper cables.
Re: Engine turns over BUT
Posted: Tue Jun 07, 2022 9:02 pm
by Isuzustorm
PwrWgnDrvr wrote: ↑Tue Jun 07, 2022 4:21 pm
Rotate the engine by hand using a breaker bar and socket on the vibration damper bolt, plugs out. If you don't fell the spot that hangs up, then its probably the starter.
Get a good battery and try that first. You'll need one eventually anyway. If not, borrow one from your other vehicle. Remove the bad battery as it is a drain on your boost pack or jumper cables.
Has tight spots doing it by hand, no plugs. If it is a spun bearing, think I could get away with just doing bearings and seals - rebuild engine at a later date - to get it running, or would this cause more damage to the crank...
Thoughts??
Re: Engine turns over BUT
Posted: Tue Jun 07, 2022 10:07 pm
by nutz
its tight only hope you might have is rust or loose carbon in the cylinders
if its a spun bearing your looking at crank and rods
good luck
Re: Engine turns over BUT
Posted: Wed Jun 08, 2022 12:58 pm
by dodgeboykim
nutz wrote: ↑Tue Jun 07, 2022 10:07 pm
its tight only hope you might have is rust or loose carbon in the cylinders
if its a spun bearing your looking at crank and rods
good luck
Do you no someone with a snake type plumbing camera/viewer. Pull plugs and inspect cylinders
Re: Engine turns over BUT
Posted: Thu Jun 09, 2022 9:02 pm
by nutz
amazon has nice bore scopes for around $50
i bought an up scale one for $85