Today's Message Index:
----------------------
1. 08:18 AM - Re: Rotax trouble shooting tip of the day (Roger Lee)
Message 1
| INDEX | Back to Main INDEX |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Rotax trouble shooting tip of the day |
Here is the answer to this particular problem. It was a broken white ground wire
going into one of the ignition module pin connectors. There is one white ground
wire that goes into each plastic pin block and it is in a corner hole on the
pin block. I always say something is finger tight, but wrench loose and the
same goes for wiring. So unless you grab each wire and look at it from start
to finish it may be broken or pinched or chafed against some metal or hanging
by a thread causing a poor connection, ect...
Here is the clue that made me tell him where to look first. The plane ran fine
at all rpms. Only when he turned the key off it did not want to shut down completely.
He said it sounded like it was running on only one ignition module (mag)
and of course at a reduced rpm. So it sounded as if one mag was shutting down,
but the other was not. So the very first thought should be if one is shutting
down why isnt the other. When you turn the key off it should ground out.
So for me the first thing to check before bouncing all over looking with no logical
direction was to look at both ground wires since they are easily accessible
and usually easy to visualize. While I was talking to this gentleman on the
phone telling him which wires to look at he was grabbing one of the white wires
and it came out of the plastic pin block at the ignition model broken. He
said he just barely tugged it and it was out. This is the ignition ground wire.
It was broken up inside the pin block where it was crimped. By replacing the
crimp on the end of the wire he was ready in short order. Yes there could have
been another problem somewhere else, but the idea here is to start in the most
logical and easiest area to inspect first.
I guess the moral of the story is to develop good diagnostic skills and then teach
yourself to start at point A then to B and so on. You need to know where the
starting point is and where the most logical problem area is and start from
there. Eliminate all the easy most logical points first then you can tear into
more hard to reach or costly areas. This approach will save you time, money
and aspirin for the headaches.
I hope this story helps someone that may have the same type of engine shut down
issue with a starting point for your resolution.
--------
Roger Lee
Tucson, Az.
Light Sport Repairman - Maintenance Rated
Rotax Repair Center
Home 520-574-1080 TRY HOME FIRST
Cell 520-349-7056
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=339314#339314
Other Matronics Email List Services
These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.
-- Please support this service by making your Contribution today! --
|