Crankcase engine Fault Please help

[Ivan141]

If the breather isnt blowing when you put your finger on it and give the engine some throttle, it is surely blocked.

[kpretro84]

Ivan141 Wrote:If the breather isnt blowing when you put your finger on it and give the engine some throttle, it is surely blocked.

Is there more to this? yes ive placed my finger where the breather is looking at that above picture. They was no blowing or noise coming from that hole. if i give it throttle dipstick will fly out then oil everywhere. what ever the part is blocked how am i to unblock it? please

thank you all for response so far

[kpretro84]

fax0815 Wrote:Should be able to swap them over with no problem or powerloss. Block the returnpipe, yes.

id like to believe this but only one person has said no problem. i sort of want the original stock 100kw smallport as is. So are you sure? And how are you so please? have you done it in the past?

[Ivan141]

This is still all a bit odd to me.. you said your redtop block is rebuilt. If it is, it shouldn't have much blow-by, even if the rings havent worn in yet.
Someone correct me if I'm wrong. I also wouldnt be to keen on swapping blocks if I just rebuilt the engine.

About the breather hole: that is the place the engine is supposed to vent its excess pressure.. if it's not blowing there, but is in other places, something most likely is blocked. Try blowing air into it with the engine turned off.. you should be able to blow freely.

[kpretro84]

Ivan141 Wrote:This is still all a bit odd to me.. you said your redtop block is rebuilt. If it is, it shouldn't have much blow-by, even if the rings havent worn in yet.
Someone correct me if I'm wrong. I also wouldnt be to keen on swapping blocks if I just rebuilt the engine.

About the breather hole: that is the place the engine is supposed to vent its excess pressure.. if it's not blowing there, but is in other places, something most likely is blocked. Try blowing air into it with the engine turned off.. you should be able to blow freely.

i dont know if you have read everything above ive also mentioned that am not the one rebuilt the smallport. I will however try blow air through and get back with results. the blue top is just a spare incase i blow the smallport.

[kpretro84]

Woooow it is soooo Blocked alright. i couldn't blow any air in it felt like blowing in a bottle. I grabbed the other cam cover from the blue top engine huge difference felt like blowing through a pipe. i couldn't start the engine though flat battery a mate took the jumper leads. i think you just fixed my problem and saved me heaps of time i am glad i came on here first i like feel yeah thanks so much i will post again how things go after my jump start.

[Ivan141]

Wish you good luck.. hope the engine is still OK.
If it blows a lot out of that breather pipe, it probably isnt in good condition.

[The Doctor]

but a blocked breather can cause massive problems, without the engine being terribly ill
I had the same on my engine, breather plugged in wrong by MoT man and the engine was pissing out oil EVERYWHERE.
All went back to normal when the breather system worked as it should.

[kpretro84]

Hi all i think engine is Totally fine. Fired first pop instant starts. there no more excessive oil leaks the dip stick doesnt jump out anymore since ive throttled bounced off the limiter 7000rpm i only have a little dizzy drip that was already there before the problem... Just one thing il have to figure out the tachometer wire connected to my negative side of coil was making the coil go really Hot unless its disconnected and its not reading properly just moving aroung between 1000 and 3000 at idle. il just google around figure it not a Bigy Many Many Thanks Happy New years