[DeTomaso] OIL PRESSURE ISSUE

[Thomas Tornblom]

2012-06-25 16:20, clewis at dmn.net skrev:
> Here are the issues:
>
> Brand new rebuild on engine.  Engine had 16 dyno pulls, zero issues.  The engine has a hydraulic roller valve train.
>
> Driving home I am checking the gauges and my Autometer, Electric, 0-100PSI Oil Pressure Gauge, Model 6153, is showing ZERO pressure reading.  I continue to drive another 2-3 miles and then I pull over and
> shut down.
>
> I called a flatbed and got towed home.  Put the car in the garage.
>
> The oil is full.
>
>
> Engine HAS NOT seized.
>
> After getting it home have fired it briefly two or three times and it fires up right away.  Because it fires up right away I do not suspect a broken distributor gear or sheared distributor gear pin.  It is
> not making excessive noise like the lifters are collpased due to no oil pressure.
>
>
> What else besides a failed gauge would exhibit these symptoms?  I will be checking oil pressure today by attaching a mechanical gauge, but if I do not get pressure during this test what else should I be
> looking for?

Snapped oilpump shaft.

Lose oilpump sensor wire. With the ignition on, ground the wire on the 
sensor and check that the gauge shows full pressure.

Bad sensor or grounding issue.

Thomas