does this look bad to you ?

[E-T-H-A-N]

okay so ive noticed every time i look at my engine, the inlet manifold seems to have a small amount of coolant in it, ive had it running and i cant see where its coming from, its coverd in oil, like coverd.

anyway, i took my inlet manifold cover off and it looks like this

its a vt s pack, manual with 253 000ks on it. its miss firring atm even after ive done the plugs and leads, coil packs look new, im thinking the inlet manifold gaskets buggerd so this could cause it to miss. im thinking about rebuilding the motor

[lufkin]

that looks normal 9/10 peoples ecotecs looks like that

[Wombles]

Give the Mace gasket a go. But yea. Thats normal for an ecotech.. If you want, just clean it up while you do the inlet gasket.

[E-T-H-A-N]

what do the mace gaskets go like ? i want to port the heads on it. and high ratio rockers.

[vx_commodore]

wow u really got to clean that!!!!! prob why its missfiring! jk
But other than that ,I dont think its anything to worry about

[E-T-H-A-N]

yeah its dirty aye!

[VT_SS]

This more directed at your quote mate.
"If your not driving a manual your only stearing not driving"
It would seem to me even though you have a manual you are not driving or stearing this car or you are having quiet a few issues acheiving this task.
Just an observation

[E-T-H-A-N]

lol i dont get it ? the car drives fine... haha or i may have missed your point completely... aha

[acarmody]

Thats normal mate. All that oil/carbon shit is just from the PCV valve.

Don't know how you can get coolant in the inlet manifold though. Under the rocker covers yes, but in the inlet manifold?

[Dr HaxZaw]

Get some inlet manifold cleaner... Can pick it up at bursons or repco or wherever and just spray some on there and then scrape as much as you can off

The way i did it was push a rag down each runner but left it so i could get it easy then went nuts with a scrapper and spray and eventually some scouring pad and when i was done just carefully pulled each rag up so i cought any large peices of carbon before they got to the valves

[WogBoyz]

My old vs, used to be similar to that and my throttle body too, i got some carby cleaner and a rag and totally cleaned everything up, i reakon it ran smoother and better, i then did it every 3 - 4 months or so to keep it clean

[E-T-H-A-N]

yeah, since the inlet manifold gasket needs doing anyway so i was going to clean it up than, i was thinking carby cleanner and a scraper.

and with the coolant, i have no freaking idea its got me stumped

[AKA_VT2]

best way to stop the oil build up is to block off the pcv and the egr.. worked for me on my vt

[acarmody]

best way to stop the oil build up is to block off the pcv and the egr.. worked for me on my vt

You blocked off the PCV?? Do you have a breather on or something?

As for the EGR, if you have enough oil going through your exhaust for it to build up in the plenum chamber, you have more pressing concerns to worry about.

[AKA_VT2]

Yeah on my Vt I have a full breather system venting from the rockers..

[VT_SS]

lol just having a bit of a joke with ya mate.

[AKA_VT2]

Too easy mate... Bit new to the forum scene even tho I signed up years ago

[walesy]

Too easy mate... Bit new to the forum scene even tho I signed up years ago

jeez jon where you been? havnt heard from you in ages you just dissapeared lol... i like your sig... just a v6 ;-) haha

[phatvtcom]

Is it running in LPG? I've got the same backfiring issue, think its the manifold gasket also. Runs fine on petrol though so i don't know if this outrules the blown gasket...

[E-T-H-A-N]

acarmody; what should i be worried about with this ? its still miss firring! funk!

[E-T-H-A-N]

nah man its not on gas, never has been.

[acarmody]

acarmody; what should i be worried about with this ? its still miss firring! funk!

I wouldn't peg the misfiring down to the carbon build-up, though give it a clean if you have the plenum out, also clean the throttle body, will stop any throttle sticking problems.

Try swapping out the DFI module and coil packs for another one, just to test it.

Also is the missfire consistent or only happen at certain rev-range or under certain conditions. If consistent, try unplugging your injectors one-by-one to try and find the faulty cylinder if you can.

[E-T-H-A-N]

its a weird one, i think its something to do with the ignition side of things because its under load where it drops shots, the higher the revs the more it does it. if i go around a corner to slow in 2nd it stalls some times at around 1500rpm. today i droped it into 3rd at 80 and it struggled a bit.

the coil packs look new and it has new plugs and leads, i wouldnt of thought the inlet manifold for it though, if it was missing at idle i would of picked that.

[acarmody]

its a weird one, i think its something to do with the ignition side of things because its under load where it drops shots, the higher the revs the more it does it. if i go around a corner to slow in 2nd it stalls some times at around 1500rpm. today i droped it into 3rd at 80 and it struggled a bit.

the coil packs look new and it has new plugs and leads, i wouldnt of thought the inlet manifold for it though, if it was missing at idle i would of picked that.

Hmm strange, still just because a coil pack looks new, doesn't mean its functioning properly.

How does your air filter look? Still nice and clean?

[E-T-H-A-N]

air filter is okay, i wouldnt say clean. and yeah i know, i was going to pull them off and check the terminals under the coil packs,