Reece Stevens, Ballarat VIC

Hi there Allan, I own a 1992 Holden Jackaroo. I have been 4WDing since I was about 14 with my family, and now that I have my license, I can have my own little adventures. Living in Ballarat, there are plenty of hill climbs and mud, but I mostly enjoy the High Country. So far, the Jackaroo has a 40mm TJM lift, TJM bulbar with 3 spotlights, 15in CSA rims with BFG All Terrains and a GME UHF radio.

In the future I am planning to lift the Jackaroo 4in with heavy modifications to the front suspension, a custom snorkel and a custom rear bar on the drawing board.

There’s a knocking noise coming from the engine after the engine warms up. It’s okay when it first starts, but after running the engine for about 5 minutes, there’s no oil pressure and the knocking appears. Where do I go from here?

Allan

Well I can tell you Reece, that’s not opportunity knocking, that’s for sure! It’s what we would call a ‘H-O-S-O-P-O’, which is a head off, sump off, pistons out. If you’re got no oil pressure and a knocking noise, preferably with a master gauge to double check whether there’s no oil pressure, and you’ve got the right amount of oil in it, which you’ve checked, I think you’ll find you’ve done a big end or a main bearing.

It really depends on just how heavy that noise really is that will indicate which bearings are shot, but it doesn’t really matter, it’s pull out, strip down and have a look at your bearings. It doesn’t sound too good to me buddy!

Before you pull it out, you really need to perhaps get another opinion on it, but when you get it out, I think you’ll find some damage as it doesn’t sound terribly good to me from what you’ve explained! Don’t shoot the messenger though, but you’ve got a major problem!

Sorry about that, but if we can help you any further, just sing out. Just make sure you don’t start spending too much money on it because you have some serious problems here!