---------------------------------------------------------- Yak-List Digest Archive --- Total Messages Posted Mon 10/02/17: 8 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 12:20 AM - Re: Re: WON'T START (ggg6@att.net) 2. 12:52 PM - Re: WON'T START (Bill1200) 3. 01:14 PM - Re: Re: WON'T START (JON) 4. 02:05 PM - Re: Re: WON'T START (Anthony Savarese) 5. 02:08 PM - Re: Re: WON'T START (Anthony Savarese) 6. 03:23 PM - Re: WON'T START (Bill1200) 7. 03:53 PM - Re: Re: WON'T START (Walter Lannon) 8. 05:06 PM - Re: Re: WON'T START (A. Dennis Savarese) ________________________________ Message 1 _____________________________________ Time: 12:20:55 AM PST US From: ggg6@att.net Subject: Re: Yak-List: Re: WON'T START Check the gap on the spark plugs. I had that once. Reset gap. Problem solved. Gary Sent from my iPad > On Oct 1, 2017, at 17:02, Bill1200 wrote: > > > Yes, auto plug conversion last year > > > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=473257#473257 > > > > > > > > > ________________________________ Message 2 _____________________________________ Time: 12:52:59 PM PST US Subject: Yak-List: Re: WON'T START From: "Bill1200" Update Checked spark at ignition coil wire, great bright blue spark up to 1/2 inch away from engine block so don't think that is the problem. Cleaned all contacts inside the cap and points So, now I will check the plug gaps as noted above. How do I check to make sure the spark from the coil wire is getting to the plugs? Don't think it's a fuel problem either, gets plenty of gas coming out of intake drain after priming Stumped!!!!!!!! Read this topic online here: http://forums.matronics.com/viewtopic.php?p=473269#473269 ________________________________ Message 3 _____________________________________ Time: 01:14:30 PM PST US From: JON Subject: Re: Yak-List: Re: WON'T START With all the discussion about the primer on a YAK... I have this question about the primer on the CJ: How does rotating the primer counterclockwise or clockwise on a CJ differ? I'd heard that clockwise doubles the amount of fuel...true? JB ----- Original Message ----- From: "Bill1200" Sent: Monday, October 2, 2017 2:52:40 PM Subject: Yak-List: Re: WON'T START Update Checked spark at ignition coil wire, great bright blue spark up to 1/2 inch away from engine block so don't think that is the problem. Cleaned all contacts inside the cap and points So, now I will check the plug gaps as noted above. How do I check to make sure the spark from the coil wire is getting to the plugs? Don't think it's a fuel problem either, gets plenty of gas coming out of intake drain after priming Stumped!!!!!!!! Read this topic online here: http://forums.matronics.com/viewtopic.php?p=473269#473269 ________________________________ Message 4 _____________________________________ Time: 02:05:26 PM PST US Subject: Re: Yak-List: Re: WON'T START From: Anthony Savarese Question- is the engine correctly timed? What is the point gap on each mag? How many degrees BTDC are the mags timed? Dennis Sent from my iPhone > On Oct 2, 2017, at 3:52 PM, Bill1200 wrote: > > > Update > > Checked spark at ignition coil wire, great bright blue spark up to 1/2 inch away from engine block so don't think that is the problem. Cleaned all contacts inside the cap and points > > So, now I will check the plug gaps as noted above. How do I check to make sure the spark from the coil wire is getting to the plugs? > > Don't think it's a fuel problem either, gets plenty of gas coming out of intake drain after priming > > Stumped!!!!!!!! > > > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=473269#473269 > > > > > > > > > .. ________________________________ Message 5 _____________________________________ Time: 02:08:06 PM PST US Subject: Re: Yak-List: Re: WON'T START From: Anthony Savarese One last thing. Is the rotor properly positioned when the points open? This is very important. Dennis Sent from my iPhone > On Oct 2, 2017, at 4:13 PM, JON wrote: > > With all the discussion about the primer on a YAK... I have this question a bout the primer on the CJ: How does rotating the primer counterclockwise or clockwise on a CJ differ? I'd heard that clockwise doubles the amount of f uel...true? JB > > > From: "Bill1200" > To: yak-list@matronics.com > Sent: Monday, October 2, 2017 2:52:40 PM > Subject: Yak-List: Re: WON'T START > > > Update > > Checked spark at ignition coil wire, great bright blue spark up to 1/2 inc h away from engine block so don't think that is the problem. Cleaned all con tacts inside the cap and points > > So, now I will check the plug gaps as noted above. How do I check to make sure the spark from the coil wire is getting to the plugs? > > Don't think it's a fuel problem either, gets plenty of gas coming out of i ntake drain after priming > > Stumped!!!!!!!! > > > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=473269#473====== ================= > > > > ________________________________ Message 6 _____________________________________ Time: 03:23:47 PM PST US Subject: Yak-List: Re: WON'T START From: "Bill1200" second update went back to airport about 2 hours after this morning's failed attempts, started right up after only 2 pumps prime (was concerned this might be an overprime problem) To answer your question, the timing was not done on the last annual so I don't know, but as stated it runs great once it starts. That being said, would it run at all if the rotor was not on correctly? When I do the runup, the mags have always dropped what I felt was excessive, but was told it wasn't a big enough deal to adjust. RPM drop 5-6% both sides identical Read this topic online here: http://forums.matronics.com/viewtopic.php?p=473275#473275 ________________________________ Message 7 _____________________________________ Time: 03:53:19 PM PST US From: "Walter Lannon" Subject: Re: Yak-List: Re: WON'T START Hi Jon; The CJ primer is essentially identical to it=99s Russian counterpart. It is the CJ fuel system that is different in that the Emergency fuel sup ply is provided by a hand operated wobble pump. As a result there is no n eed for the second function of the primer unit (Emergency fuel pump). Wit h the simple addition of a jumper line (by the factory) connecting the two output ports it became an engine primer only from either side. No, it does not change the output fuel quantity. Could be converted to work in the =9852 system by simply removing the jumper. After reading about Bill Dykes starting problems I wonder if over-priming m ay have something to do with it and if everyone involved is fully aware of the danger of hydraulic lock from that source. Walt From: JON Sent: Monday, October 02, 2017 1:13 PM Subject: Re: Yak-List: Re: WON'T START With all the discussion about the primer on a YAK... I have this question a bout the primer on the CJ: How does rotating the primer counterclockwise o r clockwise on a CJ differ? I'd heard that clockwise doubles the amount of fuel...true? JB --------------------------------------------------------------------------- ----- From: "Bill1200" Sent: Monday, October 2, 2017 2:52:40 PM Subject: Yak-List: Re: WON'T START Update Checked spark at ignition coil wire, great bright blue spark up to 1/2 inch away from engine block so don't think that is the problem. Cleaned all con tacts inside the cap and points So, now I will check the plug gaps as noted above. How do I check to make sure the spark from the coil wire is getting to the plugs? Don't think it's a fuel problem either, gets plenty of gas coming out of in take drain after priming Stumped!!!!!!!! Read this topic online here: http://forums.matronics.com/viewtopic.php?p=473269#473====== ================= --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus ________________________________ Message 8 _____________________________________ Time: 05:06:56 PM PST US From: "A. Dennis Savarese" Subject: Re: Yak-List: Re: WON'T START Yes, it would run if the rotor was reasonably close to the correct position .. The problem is, anytime you add an air gap to the spark circuit, you add re sistance to the circuit and thus reduce the voltage presented to the spark plug.=C2- If I remember correctly, the coils in these mags only produce a bout 18,000 volts, which is VERY old technology compared to what 4 stroke e ngine coils produce today. =C2- In the dozens and dozens of mags that I h ave attempted to time over the years, it is truly amazing how many rotors I have found improperly positioned.=C2- A telltale sign is the carbon trac ing in the rotor cap before or after the contact point. Also, a worn rotor finger adds to the air gap even if the rotor is properly positioned.=C2- Many times you'll find one rotor finger shorter than the other.=C2- The starting coil finger on the rotor is the trailing finger in the counterclockwise rotation direction.=C2- You could try swapping ro tors since the right mag starting finger is not used and may help with star ting if the finger on the left mag is quite short.=C2- Just make sure the rotor is properly positioned when you swap them.=C2- You can also measur e the distance between the center button and the leading finger and the sta rting coil ring on the rotor to the trailing finger in the counterclockwise rotation direction.=C2- Then measure the mag cap distance.=C2- You the n know how much distance there is between the rotor fingers and the contact s in the cap. To position the rotor, using your mag timing box, rotate the prop until the points open on the #4 cylinder.=C2- Now loosen the 3 slotted screws hold ing the rotor and using a 6" metal ruler or similar straight edge, position the straight edge over the center point of the rotor to the leading finger and to the scribe mark on the cover mating surface on the mag itself.=C2 - Those three points must line up and then you tighten the 3 slotted scre ws.=C2- The mistake many people make is they do not look straight down on the mag to align the 3 points.=C2- They look at the straight edge while standing on the ground or even on a stool.=C2- But not straight down on t he rotor.=C2- By properly aligning the rotor, it positions the rotor fing er directly under the contact point in the mag cap. Do you know how many hours are on the mags and thus the rotors?=C2-=C2- If you don't know, it may be beneficial to replace the rotors and mag caps .=C2- I believe according to Jill at M14P, the mags should be overhauled at 600 hours.Dennis=C2- From: Bill1200 To: yak-list@matronics.com Sent: Monday, October 2, 2017 6:24 PM Subject: Yak-List: Re: WON'T START second update went back to airport about 2 hours after this morning's failed attempts, st arted right up after only 2 pumps prime (was concerned this might be an ove rprime=C2- problem) To answer your question, the timing was not done on the last annual so I do n't know, but as stated it runs great once it starts. That being said, woul d it run at all if the rotor was not on correctly? When I do the runup, the mags have always dropped what I felt was excessive , but was told it wasn't a big enough deal to adjust. RPM drop 5-6% both si des identical Read this topic online here: http://forums.matronics.com/viewtopic.php?p=473275#473275 S - WIKI - - =C2- =C2- =C2- =C2- =C2- -Matt Dralle, List Admin. ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message yak-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Yak-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/yak-list Browse Digests http://www.matronics.com/digest/yak-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.