sten 84 #26 Posted May 25, 2015 In what state is the thingy you screw the injector into? Don't know if there's a burn disc in there? Hi, I have swapped injectors and cylinder heads over. Share this post Link to post Share on other sites
ranger 373 #27 Posted May 26, 2015 Hi again, Are the injector pipes interchangeable, or are they unique to each cylinder? If unique then is this the only part you have not swopped between cylinders ? Share this post Link to post Share on other sites
ranger 373 #28 Posted May 26, 2015 Just had one of those 'eureka' moments, (or perhaps I'm waking up) you've swopped cylinders ,pistons ,heads etc did you check piston height ,You could conceivably have a bent conrod which would lower compression on that cylinder if you only swopped the pistons and not the rod. Share this post Link to post Share on other sites
sten 84 #29 Posted May 26, 2015 Hi again, Are the injector pipes interchangeable, or are they unique to each cylinder? If unique then is this the only part you have not swopped between cylinders ? Yes they are identical and swapped, the engine is basically 2 singles with a shared crankcase and crank. Just had one of those 'eureka' moments, (or perhaps I'm waking up) you've swopped cylinders ,pistons ,heads etc did you check piston height ,You could conceivably have a bent conrod which would lower compression on that cylinder if you only swopped the pistons and not the rod. No I didn't check piston height or swap the rods so it is something else to look at. Share this post Link to post Share on other sites
ranger 373 #30 Posted May 26, 2015 Yes they are identical and swapped, the engine is basically 2 singles with a shared crankcase and crank. No I didn't check piston height or swap the rods so it is something else to look at. I see this occasionally on VM engines always seems to be #2 cylinder,elbow on manifold lines up nicely with #2 inlet port, any water or excess oil gets a straight shot into the port and can cause 'hydraulicing'. I've seen this happen just turning over on the starter, usual symptoms: a slight miss-fire at low revs and puffs of white smoke Share this post Link to post Share on other sites
