arronm Dropping a turd Gold Donating Members 9,520 Member For: 16y 5m 23d Gender: Male Location: Perth Posted 22/03/17 01:12 PM Share Posted 22/03/17 01:12 PM (edited) Spray the gasket with some liquid I use NDT precleaner. It seals the leak and the revs smooth out Edited 22/03/17 01:13 PM by arronm 1 Link to comment Share on other sites More sharing options...
Ralph Wiggum Moar Powar Babeh Lifetime Members 19,323 Member For: 18y 6m 27d Gender: Male Location: Perth Posted 22/03/17 01:19 PM Share Posted 22/03/17 01:19 PM #1 cylinder cops a lot of heat from the thermostat housing. Start there. 1 Link to comment Share on other sites More sharing options...
xr6tForMe Donating Members 205 Member For: 10y 9m 21d Gender: Male Posted 22/03/17 02:28 PM Share Posted 22/03/17 02:28 PM If ypu think its suckling air, replace the air with something else that will change how it behaves. I have used butane from a camping stove canister, directed with a small clear hose to diagnose an intake manifold leak. Spray a bit where you are testing for a leak and listen for changes in how the engine runs. Obviously - be careful not to set anything on fire. Do it in the open. Let it dissipate. Make sure there is nothing to ignite the gas. Link to comment Share on other sites More sharing options...
MattyP MattyP Cruise Control 6,317 Member For: 11y 11m 15d Gender: Male Location: Central Coast Posted 22/03/17 03:04 PM Author Share Posted 22/03/17 03:04 PM Thanks for all the advice fellas.. The only reason why I thought it was over-active injector due the PCM reading great economy figures (9l/100) when measure is far worse (13l/100) on the highway only. I'll start checking the Manifold tomorrow Link to comment Share on other sites More sharing options...
arronm Dropping a turd Gold Donating Members 9,520 Member For: 16y 5m 23d Gender: Male Location: Perth Posted 22/03/17 03:06 PM Share Posted 22/03/17 03:06 PM Beware of flammable material 1 Link to comment Share on other sites More sharing options...
xr6tForMe Donating Members 205 Member For: 10y 9m 21d Gender: Male Posted 29/03/17 11:32 PM Share Posted 29/03/17 11:32 PM Could fuel pressure be too high? That would also lead to higher consumption than the ECU is reporting. 1 Link to comment Share on other sites More sharing options...
MBAF Bronze Donating Members 2,156 Member For: 7y 8m 4d Posted 30/03/17 03:48 AM Share Posted 30/03/17 03:48 AM Sell it and buy soarer @MattyP 1 Link to comment Share on other sites More sharing options...
MattyP MattyP Cruise Control 6,317 Member For: 11y 11m 15d Gender: Male Location: Central Coast Posted 30/03/17 04:10 AM Author Share Posted 30/03/17 04:10 AM Could be that as well, I need a pressure gauge to see, would make some sense but you'd think my whole time would be well and truly out if that was the case I'm replacing the manifold gasket tomorrow and we will see if that works. And I would swap it for a turbo or blown soarer with a v8, t56 and aftermarket ecu. Don't like my chances though Link to comment Share on other sites More sharing options...
MattyP MattyP Cruise Control 6,317 Member For: 11y 11m 15d Gender: Male Location: Central Coast Posted 01/04/17 08:53 AM Author Share Posted 01/04/17 08:53 AM Bad news. Not a problem with the intake manifold Gasket, Big shout out to @molch Who swung by and gave me a quick demo of HP Tuners. Think I'll be going down this route now Like I said from the start, Im now almost certain its a REG or Injectors Issue. As quiet a few runners were covered in what looked like dried fuel residue. Ill try and buy another KPM 4 bar reg and if that doesnt fix it throw some new 1000cc injectors in there. If it is my injectors that have failed, It'll be incredibly dissapointing considering I've heard nothing but good things about the IDs. Link to comment Share on other sites More sharing options...
HI PSI Member 1,567 Member For: 17y 10m 25d Gender: Male Location: Central Queensland Posted 01/04/17 01:37 PM Share Posted 01/04/17 01:37 PM Physically test fuel pressure before condemning either. You'll always have dried fuel residue in wet intake runners. Link to comment Share on other sites More sharing options...
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