Tapping noise and high revs

[luke28]

So I just got a mq shorty and theres a tapping noise it sounds like in the engine and exhaust when driving also on the highway at 100ks its revving at like 3k and using heaps of petty what do youse think is happening or is it normal of mqs

[Ben-e-boy]

If you have just bought it, have you done a service yet, oils, filters, leads, plugs, coolant

[luke28]

I've put in a litre of heavy duty oil stabilizer in but that's all so far

[Ben-e-boy]

I've put in a litre of heavy duty oil stabilizer in but that's all so far

Why does it need oil stabilizer.

[threedogs]

Adjust the tappets and put on a new oil filter with so fresh oil

[luke28]

Cause its an old engine and I didn't have enough cash left for 4 litres of the good stuff apparently that cleans up old oil

[luke28]

I dont know how to do the tappets im not really mechanically minded I need someone to show me then ill be ok

[slamnsam]

+1 for starting with a service and tappet adjusment

[BLCGTS]

Tappets are really not that difficult, it's a little time consuming but it's mechanically quite simple. There's a good writeup somewhere on here, searching for tappets should yield a good result.

[BLCGTS]

Incidentally remember to go a slightly larger clearance if you're running LPG.

[luke28]

Yeah its on gas aswell I just dont trust myself with it its my only car if I wreck it im screwed I've went to 2 mechanics but neither want to touch it for some reason

[threedogs]

cant see why 2 mechanics wouldn't want to adjust your tappets.
its only bring things back to the way it should be.
Bit hard when funds are limited but good luck

[luke28]

I dont know why either one of them told me it was a headache but from what I hear its easy must not be good mechanics I guess

[93patrol]

could also be an exhaust leak, i had that sound on my old commonhore calais and it turned out to be #5 cylinder exhaust gasket was buggered and sounded like a wee man tapping furiously trying to break out of the engine bay

[luke28]

I only hear it when accelerating

[threedogs]

same as an exhaust leak,, sometimes you can feel a leak
if you can get your hand close enough with out burning yourself

[luke28]

Im gonna have to check it out I just assumed tappets cheers

[luke28]

Think u may be right could that be causing it to backfire on gas aswell cause its backfiring heaps now