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1. 05:20 AM - Re: Auto Conversion (A. Dennis Savarese)
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| Subject: | Re: Auto Conversion |
Thank you very much Jay.
Dennis
A. Dennis Savarese
334-285-6263
334-546-8182 (mobile)
www.yak-52.com
Skype - Yakguy1
On 5/12/2013 5:13 AM, Jay McIntyre wrote:
> Hi all.... would also like to chime in on how good the auto conversion
> is... you may remember the following e-mail I sent through a
> /Had a CJ through for an annual recently and we noticed a couple of
> irregularities which we have not been able to rectify as yet... /
> //
> /1) #1 mag exhibits a constant mag drop throughout all RPM ranges of
> about 100 RPM and nearly stops at idle./
> /Initially we focussed on the mag drop as although not alot, something
> was not quite right. We changed the plugs for new items (no effect);
> retimed the mag (no effect); changed the coil (no effect); and
> somewhat grasping at straws, changed the mags from side to side./
> /This seemed to fix the fault and the owner took the aircraft away but
> the fault seems to have returned. Any ideas out there? We are thinking
> it must be a plug lead. I know many of you have experienced plug lead
> woes in the past but in 15 years of operating CJ's in a dry
> environment I have never had a problem before. (aircraft has standard
> factory harness and leads but is operated in a wetter environment than
> I am used to)./
> //
> /2) Aircraft can be hard to start. Intitally we thought this was
> related to the mag problem but it seems to be more fuel related.
> Initally after the annual I could not get it started and thought it
> was the part-worn set of plugs we had just installed. I swapped them
> out for the old plugs with no effect and then realised the aircraft
> had been parked on a slope for some hours with minimal fuel in it...
> turned the aircraft 180 degrees and sure enough she started first
> go.... a-ha - must have been no fuel to carb I thought..../
> /Alas no.... still exhibits hard starting from time to time.... will
> turn and turn with no sign of life and then exhibit quite a violent
> ignition event on one or two cylinders. Sometimes it seems it is
> over-primed (lots of fuel out of the manifold drain) but other times
> under-primed. Other times it will start happily and repeatedly. Engine
> being cold or at operating temp does not seem to matter./
> /As seen above mag timing has been checked. Additionally we have
> checked shower of sparks (OK) and primer line (OK) but are a bit lost
> as to where to go now. Next step might be to pull the primer atomiser
> from the blower case and check it is not blocked/damaged./
> //
> /Perhaps the two symptoms are related - perhaps not?
> Any ideas/help on this gratefully accepted!/
>
> Dennis' kit certainly fixed the problem. Thanks to everyone else who
> contribute ideas, but we had checked most of them and the leads were
> the last thing to do. The cost of the kit was certainly a whole lot
> easier than trying to rework the Chinese one. Once we got the old one
> out I was surprised at the poor condition of the braided conduits.
> These were badly worn through where the they were clamped to the
> induction pipes with the original Chinese hardware and installation. I
> should point out that this is the first time I have encountered this
> in 17 years and after working on around 6 different CJ's.
> Only real problem was the blasted postal system took over 3 weeks to
> get it to us here in NZ!
> BTW... primer atomiser was all good and on the first start with the
> new leads it was still hard to start... was gutted initially but found
> that it just needed more prime.... primer must not be putting out the
> volume of fuel...
> Cheers to all,
> Jay
>
> *
>
>
> *
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