Engine turns over BUT

[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?

[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?

[PwrWgnDrvr]

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.

[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.

[dodgeboykim]

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.

[Isuzustorm]

Direct drive, starter looks newer, running straight off a boost pack as battery was completely toast.
1967 fargo - 318 poly.

[dodgeboykim]

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.

[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.

[Isuzustorm]

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??

[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

[dodgeboykim]

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

[nutz]

amazon has nice bore scopes for around $50
i bought an up scale one for $85