New '98 Deville Owner with coolant questions

[tateos]

Originally Posted by submariner409

No criticism here, Scott.

That crank bolt is an obscure reason for oil pressure problems in a Northstar, so it's worth a look, which is why I did the entire 37 + 120 shtick.

IF there were a burr on the crank snout or in the balancer bore, then it's entirely possible that 37 ft/lb would be reached before the hub was seated on the oil pump face. You have now probably fully seated the hub, so the hour required to go back, slack off the bolt, and go through the torque sequence may well solve your low speed oil pressure. It's only a recommendation, but it addresses a common problem. There are other possibilities, including an air leak into the oil pump pickup line, but you weren't that far into the engine to disturb that.

Way back in here there were threads on how to overfill the engine to clear a pick up tube air lock from a stuck drainback valve - that also leads to a "no oil pressure" on start because the oil pump is higher than the oil level, it's a gerotor, so must be always primed. No easy answers, just thoughts............

EDIT at 0955. Just saw your other post on the same subject - hope it worked. Tight, huh ?

Yeah - we are of the same mind Sub - that balancer was never seated in the first place.