Rb20Det Down Cyl's After Sitting In The Shed For Over A Year

[45LDE]

okay i have a R32 with a RB20DET and before putting it in the shed it was running mint didnt miss a beat.

And its been almost 2 years and iv gone to start it and found it very hard to start and when it did i had to hold the throttle on to keep it alive and is coughing and spluttering, high fuel smell from the exhaust.

I changed the plugs and drained the fuel and added fresh stuff in and it didnt help.

Checked spark all good.

so i started to pull the plugs off the coils to work out what cyls are down and i believe at least the first 2 are not going and even maybe the 3rd as well. As there was really no difference with the coil unplugged.

have i got clogged injectors? or some thing deeper?

They are Sard 550cc, they were installed about 3yrs ago from new.

[Hot33r8723]

Dryed up valve stem seals in that cylinders creates loss of

Compression aka down a cylinder

[Hot33r8723]

okay i have a R32 with a RB20DET and before putting it in the shed it was running mint didnt miss a beat.

And its been almost 2 years and iv gone to start it and found it very hard to start and when it did i had to hold the throttle on to keep it alive and is coughing and spluttering, high fuel smell from the exhaust.

Needs a good flogging most likey be injectors of

If

Loss Of compression Dryed valve stem seals

I changed the plugs and drained the fuel and added fresh stuff in and it didnt help.

Checked spark all good.

so i started to pull the plugs off the coils to work out what cyls are down and i believe at least the first 2 are not going and even maybe the 3rd as well. As there was really no difference with the coil unplugged.

have i got clogged injectors? or some thing deeper?

They are Sard 550cc, they were installed about 3yrs ago from new.

[zebra]

Errr no

Stem seals have no effect on compression

Check for corroded connections to the coils, afm etc

If its pumping out black smoke it's spark related

[45LDE]

no black smoke, changed AFM with a new one made no difference

[45LDE]

all connections look good

[Hot33r8723]

Run some injector cleaner through it Might be stale fuel of if loss of

Compression replace

Valve stem seals

[Hot33r8723]

Stem seals are to block pressure from

Leavin the combustion chamber some

Times they dry up allowing pressure past valve guides which result in loss of compresion down a

Cylinder

[zebra]

No, that's the valves job, the seals stop oil from leaking down from the head into the combustion chamber

[45LDE]

Fixed, faulty FPR replaced #winning, fuel was coming out of its vac line into the inlet manifold flooding the engine.

[Ben C34]

Took a while!

[45LDE]

I fixed it some time last year and forgot to put up the fix but it def left me stumped for months!