madvr6 0 Posted June 20, 2005 Report Share Posted June 20, 2005 So i started work on the VR today, to re-install my MoTeC ecu so im changing the wiring loom as the old one had been cut up. This is the ecuanyway, i removed the inlet manifold and when the ports of the lower inlet manifold were exposed i found oil sitting in them..this is intake 1intake 2&3intake 4&5intake 6Having a compression test done later, any thoughts guys? The car has been smoking on the over-run too..Appreciate any info, Cheers Link to post Share on other sites
dubloke 4 Posted June 20, 2005 Report Share Posted June 20, 2005 it could be no more than a bit of valve guide or seal wear. may not be as bad as you think! do the comp test anyhow buddy, to be sure. how many miles has it done? Link to post Share on other sites
Joe M 0 Posted June 20, 2005 Report Share Posted June 20, 2005 How do you have the breather set up at the back left of the engine? Is it still feeding into the inlet or have you set it up with a catch tank? Link to post Share on other sites
uber-tub 0 Posted June 20, 2005 Report Share Posted June 20, 2005 How do you have the breather set up at the back left of the engine? Is it still feeding into the inlet or have you set it up with a catch tank?sounds interesting - please elaborate. Link to post Share on other sites
dubloke 4 Posted June 20, 2005 Report Share Posted June 20, 2005 the standard breather on the vr6 is fed from the outlet on the rocker cover, back into the tb intake. if you were to bypass it the intake you could just relocate it in the engine bay and either put a small breather filter on it or an oil catch tank which you could them empty! Link to post Share on other sites
madvr6 0 Posted June 20, 2005 Author Report Share Posted June 20, 2005 Am still runing a normal breather into the intake, could it be comming up from the breather? cleaned out the TB a while ago and was VERY dirty and mucky. also the actual inlet manifold was a bit oily inside. The engine itself has done around 80-90k. Did a comp test and all were between 170-180 except one which was 100 we think. (think the comp tester might have broken though because it wasnt holding the last reading, the needle kept flickering?)Also checked all the spark plugs they were VERY black (was running very rich) and some had oil on the threads???not sure where to go from here!!!! Link to post Share on other sites
andy 0 Posted June 21, 2005 Report Share Posted June 21, 2005 If you've got 5 pots at 170 ish and 1 at 100 psi you've got a problem. I'd be far more bothered by that than the oil in the inlet manifold. Link to post Share on other sites
madvr6 0 Posted June 21, 2005 Author Report Share Posted June 21, 2005 what exactly would this indicate? bore wear? Link to post Share on other sites
dubloke 4 Posted June 21, 2005 Report Share Posted June 21, 2005 piston rings dude. less compression in one or other cylinders would lead to that conclusion! the longer you left a prob like that the more bore wear would increase! Link to post Share on other sites
madvr6 0 Posted June 21, 2005 Author Report Share Posted June 21, 2005 shite, well im going to get another comp test done as the gauge on the last one was a bit dodgy. hopefully give a better reading Link to post Share on other sites
andy 0 Posted June 21, 2005 Report Share Posted June 21, 2005 Not necesarily piston rings or bore wear, could be head gasket failure or leaking valves too. Further diagnostics would be needed to tell. Link to post Share on other sites
dubloke 4 Posted June 21, 2005 Report Share Posted June 21, 2005 agreed andy, already mentioned the valves and guides further back. but as you say a further diagnostic is needed to find out for sure. can check the h/g with a gas test in the header tank. but if its not losing water surely the gasket wont be anywhere near far gone enough to produce that amount of oil, could be a number of things tbh, best get it checked out though and soon! Link to post Share on other sites
madvr6 0 Posted June 24, 2005 Author Report Share Posted June 24, 2005 quick update guys, did another comp teest, results were a little better on that one cylinder but still way off of what it should be. even taking into account the 44psi difference between cylinders. on top of that, the wiring loom i aquired is the wrong blody one. so, what to do.... re build the engine?..... still got to try and find a compatible engine loom. who knows how long thats gonna take. plus got to do the chains and tensioners too!! Gonna cost Link to post Share on other sites
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