71 replies to this topic

[Gadgets]

Tractor sounding, something isnt right, not missfueled with Derv have you by mistake?

[BronkoMini]

Tractor sounding, something isnt right, not missfueled with Derv have you by mistake?

Not miss fuelled, it was fine the whole way there but suddenly it just went funny.

[Badboytunes]

Id say its *******.......

 

Looks like excessive crank case pressure... Plus its misfiring too. If it was rebuilt, something wasn't done right. I'd take it out and start again.....

[BronkoMini]

Id say its *******.......
 
Looks like excessive crank case pressure... Plus its misfiring too. If it was rebuilt, something wasn't done right. I'd take it out and start again.....

The thing is I bought it off someone with a good reputation on turbo minis, so I'd have though it would have been done right. Really annoying as it cost a fair big and I thought it would be fine until I rebuilt my other engine slowly, but I guess not.

[jpw1275]

Maybe you could contact them...?

Cheers james

[BronkoMini]

Maybe you could contact them...?
Cheers james

I'm not sure what to ask them and thanks for the many replys.

[ROD222]

hi that is one sick engine ,one cylinder down ,could even be broken piston ,did you run it in (new engine?) tight boars? regd rod

[BronkoMini]

hi that is one sick engine ,one cylinder down ,could even be broken piston ,did you run it in (new engine?) tight boars? regd rod

I bought it of someone that had it set up as a turbo engine, and he did a couple of thousand miles since it was rebuilt.

[silve1999]

how long have you been running it (miles) 

[BronkoMini]

how long have you been running it (miles) 

Just over 500 miles

[BronkoMini]

And I haven't been revving it loads(fuel economy), rev limiter is set to 5700rpm and I have not hit it.

[Nick Warwick]

How many breathers do you have on the engine? looks like a fair bit of crank pressure!

[BronkoMini]

How many breathers do you have on the engine? looks like a fair bit of crank pressure!

Just the tappet breather and the rocker cover cap, I was in the process of looking into getting a catch tank and plumbing it into the rocker cover which came with the engine. A that's what they recommended at the rolling road, but I would not have though it was have caused the piston rings to give up.

[Stevie W]

Hi,

 

As others have mentioned, I would agree with damaged rings and/or piston in one cylinder. The way the crankcase smoke is "chuffing" out of the filler cap hole and the fact the engine sounds like it's only running on 3 cylinders does point to one damaged set of rings/piston.

Again, as already stated, a compression check would be quick and easy and will help find the cylinder/piston at fault. If a check reveals one cylinder with a lower reading, its time to remove the head and see what the damage is.

 

Cheers, Steve.

[BronkoMini]

Thanks for the reply, I am going to take it to a garage tomorrow to compression test it as see what's what.