Hybrid_From_Hell Posted May 22, 2013 Share Posted May 22, 2013 ^^ I agre Sam, However with this sort of thing Problems need time, care, absolute 100% certainty its ticked as OK before moving on to the next itme and method and systematicly working through, jumping about here there and everywhere normally just ends up with problem not sorted and teeth grinding + higher blood pressure. 1 step at a time Mike, but do NOT rush, or "THINK anything is "OK" ....check check again trust NOTHING Nige Quote Link to comment Share on other sites More sharing options...
mikec Posted May 22, 2013 Author Share Posted May 22, 2013 Saw this :[img=http://forums.lr4x4.com/public/style_images/master/attachicon.gif] null-8.jpg This is a hole directly into the trumpet area. Just what are these biungs you have on this and the PWM exit re of plenum and port onto plenum ? They need to be airtight not "Near enough" air will find a way in A hose + Bolt up the hole + 2 x jubilee clips is a far better solution. If there is ANY doubt that you may have an air leak, any possiblities have to be double sure that they are OK. Check all pipes for splits cracks etc, only way is to remove and study carefully, inc the tubes on the rear of the plenum Also Place engine at TDC on the crank wheel indicator, then take a picture of the trigger wheel and VR sensor positioning and post up N . Those are silicon pipe caps/ends whatever there called. Ill check them out tonight, check there air tight and shove jubilees on them. Also take a pic of trigger wheel too. Ill try the hosepipe test too, presumably any pipe will do. Quote Link to comment Share on other sites More sharing options...
mikec Posted May 22, 2013 Author Share Posted May 22, 2013 Do any of you have your motor to hand and could check this whole breather issue then at least I can say for sure either way on that one? Quote Link to comment Share on other sites More sharing options...
Bowie69 Posted May 22, 2013 Share Posted May 22, 2013 Or you could just vent rockers to air, disocnnect and plug the breather connection to plenum and plug it, if still doing it then keep looking. Is that silicon sealant on the rocker covers? If so... get some rubber rocker gaskets and fit dry, with no wires pinching this time Quote Link to comment Share on other sites More sharing options...
mikec Posted May 22, 2013 Author Share Posted May 22, 2013 Or you could just vent rockers to air, disocnnect and plug the breather connection to plenum and plug it, if still doing it then keep looking.Is that silicon sealant on the rocker covers? If so... get some rubber rocker gaskets and fit dry, with no wires pinching this time The silicon was just to try and hold it on the cover, the old covers weren't siliconed so that's not the problem. They are the rubber type gaskets Quote Link to comment Share on other sites More sharing options...
Mr Noisy Posted May 22, 2013 Share Posted May 22, 2013 Will get a minute and try to stall mine mike. Watch this space Quote Link to comment Share on other sites More sharing options...
mikec Posted May 22, 2013 Author Share Posted May 22, 2013 Will get a minute and try to stall mine mike.Watch this space Ok cheers mate Quote Link to comment Share on other sites More sharing options...
Mr Noisy Posted May 22, 2013 Share Posted May 22, 2013 Here we are: Quote Link to comment Share on other sites More sharing options...
mikec Posted May 22, 2013 Author Share Posted May 22, 2013 Here we are: Nice one cheers Sam, so we can definitely say now that this is hopefully the problem. Ok I'm happy that I know now. So hopefully get some enthusiasm back tonight! Thinking about it if your engine does that, mine must have a leak somewhere in the crankcase? Or rocker cover etc. as mines drawing enough air through the rocker breather to run on? Quote Link to comment Share on other sites More sharing options...
Mr Noisy Posted May 22, 2013 Share Posted May 22, 2013 Yeah mate I'd say so. You can hear the hissing in the vid on mine and it sounded like front valley seal. There is oil soak around there also which would confirm that. Wherever your crankcase leak is, it's a big enough one to run on. I would work on the compressed air idea to find your leak Quote Link to comment Share on other sites More sharing options...
Mr Noisy Posted May 22, 2013 Share Posted May 22, 2013 Thinking on, I dabble with DJing now and then and I have some smoke machines. We could pump your engine full of smoke and see where it leaks out, if the air method doesn't work. Quote Link to comment Share on other sites More sharing options...
zim Posted May 22, 2013 Share Posted May 22, 2013 My breathers don't go to the inlet or plenum. Those ports are blocked. Too many rolls where you fill your inlet with oil. G Quote Link to comment Share on other sites More sharing options...
mikec Posted May 22, 2013 Author Share Posted May 22, 2013 Thinking on, I dabble with DJing now and then and I have some smoke machines.We could pump your engine full of smoke and see where it leaks out, if the air method doesn't work. I'd thought similar with a smoke bomb for testing fire flues but you have to light them first! Quote Link to comment Share on other sites More sharing options...
mikec Posted May 22, 2013 Author Share Posted May 22, 2013 My breathers don't go to the inlet or plenum. Those ports are blocked. Too many rolls where you fill your inlet with oil.G Ok maybe if I blank off that pipe from breather to plenum and check it, itll confirm its crankcase side rather than the plenum etc? Quote Link to comment Share on other sites More sharing options...
Hybrid_From_Hell Posted May 22, 2013 Share Posted May 22, 2013 You now should be frustratingly motivated to "Find the F air leak" now Remove plenum and check base, bung those ends x 3 properly Quote Link to comment Share on other sites More sharing options...
zim Posted May 22, 2013 Share Posted May 22, 2013 Nige, on a different topic. The 4.6 you sent me didn't run very nice. But i think you said it was a tweaked one from a "naughty" engine. I've reverted to another one and it seems ok. Only done an hours use to test fuel consumption LOL (8 litres / hour). G Quote Link to comment Share on other sites More sharing options...
Hybrid_From_Hell Posted May 22, 2013 Share Posted May 22, 2013 Yup The map I sent you was from a tuned V8. Suggested you lean the entire VE off by 12%, and then log it ? Otherwise it will run rich. Heads inlet and trumpets all bigger and ported Nige Quote Link to comment Share on other sites More sharing options...
mikec Posted May 22, 2013 Author Share Posted May 22, 2013 Just spent a quick five minutes on it, all those bungs are now jubilee clipped. Tried the hose trick, and I'm fairly sure the inlet manifold and around some of the bolts have a change of note in them. I'm not gonna get a gasket tonight so ill try and do them up a bit more and see what happens. Least I've got something fairly positive to go at. Fingers crossed! Quote Link to comment Share on other sites More sharing options...
mikec Posted May 22, 2013 Author Share Posted May 22, 2013 http://i49.photobucket.com/albums/f257/little_landy/ACC26811-0679-49D9-BD3A-A0B13EC7B1E3-1970-0000029F7FF2CB57.mp4 Quote Link to comment Share on other sites More sharing options...
mikec Posted May 22, 2013 Author Share Posted May 22, 2013 Quote Link to comment Share on other sites More sharing options...
mikec Posted May 22, 2013 Author Share Posted May 22, 2013 That's with marker at tdc. Tried tightening the inlet bolts up seems to have made a difference it now stops with hand over inlet. There's still a leak there I think, so will have to put a new gasket on and see. Just gonna get it warm and see what's happening with everything connected.... Quote Link to comment Share on other sites More sharing options...
TheRecklessEngineer Posted May 22, 2013 Share Posted May 22, 2013 http://i49.photobucket.com/albums/f257/little_landy/ACC26811-0679-49D9-BD3A-A0B13EC7B1E3-1970-0000029F7FF2CB57.mp4 Jolly good. Taken it for a drive? Quote Link to comment Share on other sites More sharing options...
TheRecklessEngineer Posted May 22, 2013 Share Posted May 22, 2013 And have you checked at any point that the marker on the pulley is accurate? Normally done by shoving a pencil/screwdriver down the bore and watching it as the piston comes up to TDC. Quote Link to comment Share on other sites More sharing options...
mikec Posted May 22, 2013 Author Share Posted May 22, 2013 Jolly good. Taken it for a drive? Not yet. Warmed it up and it's still hunting about 770-920 ish. But just hoping a new gasket might sort it. Not driven it yet but the flatspot is still there. Gonna put it together and see what it drives like. Checked the tdc marker when it was in bits, from what I've read they can be a way out but this one was bob on! Quote Link to comment Share on other sites More sharing options...
mikec Posted May 22, 2013 Author Share Posted May 22, 2013 Ok just had a quick drive, no different to drive still kangoorooimg. So I decided to put in the old msq, the one I posted up here. It's far better to drive. Although it doesn't pick up off the throttle perfectly it doesn't start kangorooing. Ill fit a new gasket tomos. And not use any rtv and see how that goes! I'm away in it at the weekend so hopefully that sorts it Quote Link to comment Share on other sites More sharing options...
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