« previous next »
Pages: [1]   Go Down

Author Topic: rough idle.  (Read 1630 times)

0 Members and 25 Guests are viewing this topic.

Offline

  • Global Moderator
  • Nitro Hotsaw
  • *******
  • Posts: 2114
  • Karma: 172
  • Location: VA

    • Total Badges: 36
    Badges: (View All)
    Tenth year Anniversary Nineth year Anniversary Eighth year Anniversary Seventh year Anniversary Sixth year Anniversary Level 6
rough idle.
« on: November 13, 2013, 05:59:23 pm »
Could a saw that has a rough idle. By rough idle I mean it is all over the place sometimes to fast and some times it will shut off. Be caused by a leaking crank seal, or maybe to big of a jet in the carb. It revs fine and has a steady top rpm.
Logged

Share on Bluesky Share on Facebook

Offline

  • Administrator
  • Nitro Hotsaw
  • *******
  • Posts: 24887
  • Karma: 665
  • OHIO REDNECK Saw Repair Getter Done
    • Redneck Chainsaw Repair

    • Total Badges: 53
    Badges: (View All)
    Tenth year Anniversary Nineth year Anniversary Level 8 Apple User Eighth year Anniversary 20000 Posts
Re: rough idle.
« Reply #1 on: November 13, 2013, 06:05:00 pm »
I've had it be crank seals on this. Also had **** split intake boot do this too.
Logged

Offline

  • Global Moderator
  • Nitro Hotsaw
  • *******
  • Posts: 6437
  • Karma: 249
  • For The Love Of Chainsaws
  • Location: NCO

    • Total Badges: 39
    Badges: (View All)
    Seventh year Anniversary Sixth year Anniversary Fifth year Anniversary Fourth year Anniversary 5000 Posts Third year Anniversary
Re: rough idle.
« Reply #2 on: November 13, 2013, 06:05:28 pm »
For me, a new carb metering valve diaphragm fixed this
Logged
We should share what we know... someone may learn...
That knowledge can live after us... and that "Pays It Forward".
Be all that you can be . . .

Offline

  • Global Moderator
  • Nitro Hotsaw
  • *******
  • Posts: 2114
  • Karma: 172
  • Location: VA

    • Total Badges: 36
    Badges: (View All)
    Tenth year Anniversary Nineth year Anniversary Eighth year Anniversary Seventh year Anniversary Sixth year Anniversary Level 6
Re: rough idle.
« Reply #3 on: November 13, 2013, 06:08:55 pm »
It has a new carb and also the intake manifold is new as well. I will do a vaccum test and see what is going on with it.
Logged

Offline

  • 4 cube
  • **
  • Posts: 33
  • Karma: 2

    • Total Badges: 16
    Badges: (View All)
    Level 4 Mobile User Fourth year Anniversary Third year Anniversary 10 Posts Level 3
Re: rough idle.
« Reply #4 on: November 15, 2013, 06:09:59 pm »
Quote from: Cut4fun_ on November 13, 2013, 06:05:00 pm
I've had it be crank seals on this. Also had **** split intake boot do this too.
Surging idle is the usual symptom of an air leak. Top handle saws are prone to intake boot leaks.

Did you find a problem during the Vac/Pressure test?
Logged

Offline

  • Global Moderator
  • Nitro Hotsaw
  • *******
  • Posts: 2114
  • Karma: 172
  • Location: VA

    • Total Badges: 36
    Badges: (View All)
    Tenth year Anniversary Nineth year Anniversary Eighth year Anniversary Seventh year Anniversary Sixth year Anniversary Level 6
Re: rough idle.
« Reply #5 on: November 15, 2013, 08:02:21 pm »
No it held tight during both test plus rolled the crank as well. think my jetting was to big had a tillotson HS 320 on there it had a .71 main jet , I put on a walbro wj 67 with .66 main jet and will try it out.
Logged

Offline

  • Administrator
  • Nitro Hotsaw
  • *******
  • Posts: 4941
  • Karma: 216
  • OHIO REDNECK

    • Total Badges: 44
    Badges: (View All)
    Tenth year Anniversary Nineth year Anniversary Eighth year Anniversary Level 7 Seventh year Anniversary Apple User
Re: rough idle.
« Reply #6 on: November 15, 2013, 08:19:21 pm »
Quote from: kr5258 on November 15, 2013, 06:09:59 pm
Quote from: Cut4fun_ on November 13, 2013, 06:05:00 pm
I've had it be crank seals on this. Also had **** split intake boot do this too.
Surging idle is the usual symptom of an air leak. Top handle saws are prone to intake boot leaks.

Did you find a problem during the Vac/Pressure test?

Nope, I just Redneck it.    ;) :D
Logged
Pages: [1]   Go Up
« previous next »
 

Related Topics

  Subject / Started by Replies Last post
0 Replies
760 Views 		Last post February 11, 2012, 07:05:07 pm
by Old Iron Logging
22 Replies
3696 Views 		Last post October 05, 2012, 10:17:28 pm
by Al Smith
3 Replies
1660 Views 		Last post February 15, 2013, 04:24:17 pm
by Cut4fun .
10 Replies
2511 Views 		Last post December 27, 2014, 06:58:45 pm
by 660magnum
5 Replies
2508 Views 		Last post June 21, 2015, 12:59:48 pm
by Cut4fun .
1 Replies
1381 Views 		Last post August 17, 2016, 07:27:27 pm
by Cut4fun .
12 Replies
2350 Views 		Last post October 14, 2016, 07:03:38 pm
by dannyupsolate
0 Replies
703 Views 		Last post March 26, 2018, 03:35:00 pm
by dano
1 Replies
1492 Views 		Last post May 25, 2018, 10:36:47 pm
by farmboy
2 Replies
1990 Views 		Last post December 14, 2022, 02:31:59 pm
by jfulford1