I have an old PH2 Petter on the logsplitter .
It's always been a noisy smoky thing of great beauty that I assumed would work even after nuclear holocaust .
However while trying to split a stubborn log I upped the revs to max . I started to hear a mechanical noise from the top end and instantly returned it to idle . All seemed fine but I had a popping that sounded like the engine firing through the exhaust .
I stopped it and had a look under the tappet cover and then even a look in the crankcase via the removable windows . Nowt to see .
I started it again and after removing the air filter could feel more air coming out of the air intake than going in - it was like an exhaust .
I had some small mechanical noises and I decided to stop it by killing the throttle .
Just before it reluctantly died I saw some oil leach out from a couple of gaskets which worried me .
Off with the heads . Nothing to see . One exhaust valve lets WD40 past slowly . Pistons removed and nothing to see , although well used .
I found a small golf ball sized lump of coal in the sump and some small bits of swarf , but nothing that looked horrendous . It all seems to be ok within reason .
I have left it as is and I'm away at work thinking of ordering some bits . The one thing I wish I had checked was whether the exhaust was choked . It would be the only thing that would make sense . Anyone got any thoughts ?
Petter PH2
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Re: Petter PH2
Hi Gordon.
The exhaust ports can block up with deposits on these motors, Mine was blocked solid on one cylinder and had to chisel the blockage out. I was told that occurs because they run on tickover for long periods I.E tea breaks meal breaks ETC.(knowing their reputation for hand cranking) I can believe it.
try taking the exhaust valves out and checking the ports ETC while you have the heads off.
Norm.
The exhaust ports can block up with deposits on these motors, Mine was blocked solid on one cylinder and had to chisel the blockage out. I was told that occurs because they run on tickover for long periods I.E tea breaks meal breaks ETC.(knowing their reputation for hand cranking) I can believe it.
try taking the exhaust valves out and checking the ports ETC while you have the heads off.
Norm.
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Re: Petter PH2
Thanks Norm ,
the head ports did have a fair build up but not too bad . I just wish I'd had a look in the exhaust manifold .
The air coming out the air intake is a bit of a worry and I hope it's just a blocked exhaust .
Yeah , I leave mine idling most of the time . The smoke when it gets revved up is bad ! .
It's always a case of on with the welding gauntlets when it's starting time !
Thanks , Gordon .
the head ports did have a fair build up but not too bad . I just wish I'd had a look in the exhaust manifold .
The air coming out the air intake is a bit of a worry and I hope it's just a blocked exhaust .
Yeah , I leave mine idling most of the time . The smoke when it gets revved up is bad ! .
It's always a case of on with the welding gauntlets when it's starting time !
Thanks , Gordon .
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Re: Petter PH2
essexpete wrote:Fred will be along soon to add his invaluable knowledge to the pot!
I wonder if an inlet valve is not seating properly or crank case pressure building.
Hi,
Sounds like the engine needs decarbonising to me.
Is there possibly a blocked exhaust pipe or is the silencer mounted directly to the exhaust manifold Let us know what you find.
I posted detailed procedure to set up the pumps to eliminate the smoke problem on here about a month ago. (April 16th)
Fred
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Re: Petter PH2
Thanks Fred , I will search out your post now .
The exhaust silencer was a new off ebay item , a vertical stack meant for a grey fergie . I've got the rain cap on top but I just can't remember whether it was a straight through or packed with wool type . When I first used it the flap used to be full open even on idle and recently I did notice that the flap wasn't lifting much - and I was getting some of the smoke blown onto me . I think i'll just go with a 2 inch pipe or cut the silencing material out of it and stitch it back together .
First time I've had any real engine issues with anything I've had , I usually treat them gentle and don't have any bother .
I thought I'd do rings as well .
I am measuring about 87.79 with the liddles calipers , standard size is 87.3 . The pistons are AE and marked BLPVD 80051E030T with what I think is the part number 350254 . Does the 30T in the first number signify 30 thou over ? From what I measured it would seem 20 thou over ?
The exhaust silencer was a new off ebay item , a vertical stack meant for a grey fergie . I've got the rain cap on top but I just can't remember whether it was a straight through or packed with wool type . When I first used it the flap used to be full open even on idle and recently I did notice that the flap wasn't lifting much - and I was getting some of the smoke blown onto me . I think i'll just go with a 2 inch pipe or cut the silencing material out of it and stitch it back together .
First time I've had any real engine issues with anything I've had , I usually treat them gentle and don't have any bother .
I thought I'd do rings as well .
I am measuring about 87.79 with the liddles calipers , standard size is 87.3 . The pistons are AE and marked BLPVD 80051E030T with what I think is the part number 350254 . Does the 30T in the first number signify 30 thou over ? From what I measured it would seem 20 thou over ?
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Re: Petter PH2
Yeah Pete , it was a winget I think . Lay on a hillside nearby , omly one axle working , clutch blown , no brakes or fuel tank and loads of other issues . I chopped it up and I have never seen a machine so heavily constructed - those wingets were made to last that's for sure ! The two rams for the tilt are twinned together for the travelling wedge . The center hinge ram was going to be a tilting table to get the big rounds onto it , but I ran out of enthusiasm when the sun came out .
The metal box hinges down and just covers the engine . Just an angle iron frame with galvy sheet riveted on . Means I can leave it outside and at least the engine stays dry .
The metal box hinges down and just covers the engine . Just an angle iron frame with galvy sheet riveted on . Means I can leave it outside and at least the engine stays dry .
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