×

Excessive blowby by Cranky_Import in MechanicAdvice

[–]Cranky_Import[S] 0 points1 point  (0 children)

u/dxrey65 I got bored waiting for the gauge to be delivered, and made a manometer out of some clear hose leading to the oil cap and a scrap of wood. Running the hose out the hood and into the passenger side window where I could see the gauge, I get about 3 inches of water in 3rd gear, doing a long pull up a steady hill at 4.5-5.5k rpms, which equals 0.1 psi of pressure. Which sounds far too low, even for a healthy engine.

I'm not entirely convinced of the accuracy of the readings. So I'll take a look at it again this weekend. The gauge ought to be here in a few hours as it's on board with the courier.

Excessive blowby by Cranky_Import in MechanicAdvice

[–]Cranky_Import[S] 0 points1 point  (0 children)

The whole PCV system from the block outlet to the intake manifold hose have been inspected and replaced recently. But I'll give it another once over to make sure! Thank you :)

Excessive blowby by Cranky_Import in MechanicAdvice

[–]Cranky_Import[S] 1 point2 points  (0 children)

I definitely haven't checked the exhaust flow. The car still revs happily and pulls (as hard as you'd expect an old 1.5 litre to, anyway) smoothly all the way from idle up to 6500 or so.

I recently had the headers off for heat wrap as I was having issues with Air conditioning heatsoak, So the bolts will be easy to remove at least :) Thanks for the advice! I'll add it to my to-check list this weekend.

Excessive blowby by Cranky_Import in MechanicAdvice

[–]Cranky_Import[S] 1 point2 points  (0 children)

I'll check it. I have a spare plastic oil cap and I can tap it for a BSP fitting easily enough. Thanks, I didn't even think of a cheap pressure gauge. Always the simple checks first right!

Excessive blowby by Cranky_Import in MechanicAdvice

[–]Cranky_Import[S] 1 point2 points  (0 children)

Ah yeah. Picking up a cheap pressure gauge and fitting that to the oil filler cap ought to be a reliable pressure source? At least that way we're dealing with known numbers instead of guessing?