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HELP serious rich running problem

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Re: HELP serious rich running problem

Postby Pops » Fri Jul 27, 2018 7:41 pm

All good stuff thanks everyone

As it happens I've got a suitable Spring balance for checking the pull off Strength of the magnets

Some of the things listed have been checked some haven't. Distance is proving a problem so if not sorted in the morning I will derig and bring back to home airfield in any case so I can work on it properly

Didn't occur to me - or my engineer - that fuel pump Spring going week could cause increase pressure spikes

Anyway - it will be a lot easier to sort once at home
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Re: HELP serious rich running problem

Postby Garyo » Sun Jul 29, 2018 9:37 am

I think the heads are going to have to come off
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Jabiru 450 UL
Engine serial 1041
1 CHT sensor on No 4 under plug
No Exhaust temp sensors
No glass panel
No xponder
Microair radio
No bells and whistles
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Re: HELP serious rich running problem

Postby Pops » Sun Jul 29, 2018 7:54 pm

Which is not a big deal but what are you suspecting?
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Re: HELP serious rich running problem

Postby Garyo » Sat Aug 04, 2018 7:46 am

Valve seat moving when warmed up
Former Owner of
G-OMER
Jabiru 450 UL
Engine serial 1041
1 CHT sensor on No 4 under plug
No Exhaust temp sensors
No glass panel
No xponder
Microair radio
No bells and whistles
User avatar
Garyo
Site Admin
Site Admin
 
Posts: 323
Images: 4
Joined: Fri Feb 06, 2015 7:52 pm

Re: HELP serious rich running problem

Postby pilottrev » Mon Aug 06, 2018 2:24 pm

When I had rough running engine problems we went through all of the scenarios as people have suggested and more, it turned out to be deposits on the contacts inside the dizzy caps, once cleaned off with the blade of a pen knife the engine ran sweet as a nut, worth a try,
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