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Post by bigd on Sept 6, 2016 9:00:13 GMT
Is there a way to check if the inlet pad is worn or damaged without splitting the casing and how would a damaged pad effect engine performance?
D.
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Post by pxguru on Sept 6, 2016 9:13:36 GMT
I used to be so preoccupied with inlet sealing pads when I was 30 years younger  They don't actually affect performance that much and can run acceptably even when quite knackered. The test is to take the carb off, turn the crank to shut the hole, fill the hole with raw petrol, then count how long it takes the petrol to disappear. Should be 10 seconds or more for really ok. 2 seconds is bad. Less than 2 should be thinking about a reed converion. |
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Post by bigd on Sept 6, 2016 9:16:59 GMT
Cheers Px, I was also told about using 2 stroke to test it.
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Post by paulwaite on Sept 6, 2016 16:05:56 GMT
Ah, good tip pxguru, as I'm thinking I may have damaged pad, or kidding myself that i have one.
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Post by bigd on Sept 6, 2016 19:01:58 GMT
Done the petrol test, 16.5 seconds
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Post by pxguru on Sept 7, 2016 9:56:17 GMT
Nothing to worry about there then
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Post by bigd on Sept 7, 2016 12:20:55 GMT
Thanks Px, just done a rebuild after replacing the crank, bearings, seals and cosa clutch. Engine is running rough, starts OK but struggles to tick over, severe lack of power going through the gears, like bogging down then you would get a power surge and scoot would take off.
I've tried a new cdi, checked the stator reading and a new carb, with no change. Anything else I should check?
D.
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Post by pxguru on Sept 7, 2016 14:52:11 GMT
Weirdness is usually an air leak in the crankcase somewhere. Did you do a pressure test?
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Post by bigd on Sept 7, 2016 17:29:07 GMT
Upside-down piston, oops
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Post by pxguru on Sept 8, 2016 15:51:29 GMT
Like H said we have all done it. At least once.
As you have been running it like that, the rings might now be slightly ruined. As punishment you should fit a new set.
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Post by henri on Sept 9, 2016 6:13:02 GMT
suprised you got it running , an as pxguru says check ya rings , its a miracle they havent been spat down a port .an on a t5 mallosi 172 theres a lot of port for a ring end to snag in . H
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Post by bigd on Sept 9, 2016 9:30:31 GMT
suprised you got it running , an as pxguru says check ya rings , its a miracle they havent been spat down a port .an on a t5 mallosi 172 theres a lot of port for a ring end to snag in . H Suprised alright H, it started 1st kick, lol |
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They don't actually affect performance that much and can run acceptably even when quite knackered.
