2 replies to this topic

[dmandan]

Hi All,

 

I changed the vac lines to silicone a little while ago and managed to get my MAP reading to sit under 40kpa, checked it again recently and now it's in the mid to late 40's and engine idle is rough.

 

I'm pretty sure the silicone vac lines and vapour trap are fine so looking for culprits that could cause this advice or suggestions very welcome pls?

 

I suspect I've got bore wear or a ring has gone on 2nd cylinder, anyone know if gases leaking past the piston could affect the MAP?

[sonikk4]

If you suspect bore wear have you done a compression and leak down check??

[dmandan]

If you suspect bore wear have you done a compression and leak down check??

 

i did a compression test a while back and no2 was down 20% vs the others, haven't managed to get a leak down check done yet, but would that affect that MAP reading?