Omega Owners Forum

Please login or register.

Login with username, password and session length
Advanced search  

News:

Search the maintenance guides for answers to 99.999% of Omega questions

Pages: [1]   Go Down

Author Topic: Erratic Tickover - Hunting.  (Read 970 times)

0 Members and 1 Guest are viewing this topic.

DeRangeRC

  • Newbie
  • *
  • Offline Offline
  • Gender: Male
  • The Peak District (mostly)
  • Posts: 16
  • Taking it on one job at a time.
    • View Profile
Erratic Tickover - Hunting.
« on: 22 July 2011, 10:19:27 »
Sorry if this has been covered before in here but work means I only get a few minutes to look !!  ::)

After cleaning out the IACV and all relevant breathers last night (found a very good guide on here) I took her for a test run up to temp and when I pulled up on the drive the tickover fluctuates and hunts between 1000rpm & 2000 ish rpm  :-[

What are the steps to diagnosis ? What would be the next thing to check ?

Good news is cleaning the IACV has stopped the intermittent stalling !! :)

Need to do some miles in her from Thurs next week and at the moment I dont trust it to the bottom of the road!!

??????
Logged
If its rusty cut it out.
If its dry, oil it.
If its dull, shine it.
If its stuck.......smack it with a hammer of course !!

Shelby

  • Intermediate Member
  • ***
  • Offline Offline
  • Gender: Male
  • Sleaford, Lincolnshire
  • Posts: 332
    • View Profile
Re: Erratic Tickover - Hunting.
« Reply #1 on: 22 July 2011, 10:27:40 »
Did you do right down to and including the breather jet (not just breather hoses)?

I had exactly the same problem on mine and after doing all the breather hoses and jet it made a world of difference.  Never stalled again and idles solidly at around 6-700 rpm.
Logged

RobG

  • Omega Queen
  • *****
  • Offline Offline
  • Gender: Male
  • Bristol
  • Posts: 13831
  • I might have a link, pic or part number for that
    • 16 plate Mokka. Vivaro
    • View Profile
Re: Erratic Tickover - Hunting.
« Reply #2 on: 22 July 2011, 10:39:23 »
Quote
Sorry if this has been covered before in here but work means I only get a few minutes to look !!  ::)

After cleaning out the IACV and all relevant breathers last night (found a very good guide on here) I took her for a test run up to temp and when I pulled up on the drive the tickover fluctuates and hunts between 1000rpm & 2000 ish rpm :-[

What are the steps to diagnosis ? What would be the next thing to check ?

Good news is cleaning the IACV has stopped the intermittent stalling !! :)

Need to do some miles in her from Thurs next week and at the moment I dont trust it to the bottom of the road!!

??????
Check for air leaks
Logged
All that is necessary for the triumph of evil is that good men do nothing.

UPVC windows/doors/fascias/soffit/gutters supplied/fitted

DeRangeRC

  • Newbie
  • *
  • Offline Offline
  • Gender: Male
  • The Peak District (mostly)
  • Posts: 16
  • Taking it on one job at a time.
    • View Profile
Re: Erratic Tickover - Hunting.
« Reply #3 on: 22 July 2011, 11:11:49 »
Quote
Did you do right down to and including the breather jet (not just breather hoses)?

I had exactly the same problem on mine and after doing all the breather hoses and jet it made a world of difference.  Never stalled again and idles solidly at around 6-700 rpm.

Yeh, cleaned out IACV and the breather jet at the base of the carb.....was solid with gunk !! ??
Logged
If its rusty cut it out.
If its dry, oil it.
If its dull, shine it.
If its stuck.......smack it with a hammer of course !!

DeRangeRC

  • Newbie
  • *
  • Offline Offline
  • Gender: Male
  • The Peak District (mostly)
  • Posts: 16
  • Taking it on one job at a time.
    • View Profile
Re: Erratic Tickover - Hunting.
« Reply #4 on: 22 July 2011, 11:13:32 »
Quote
Quote
Sorry if this has been covered before in here but work means I only get a few minutes to look !!  ::)

After cleaning out the IACV and all relevant breathers last night (found a very good guide on here) I took her for a test run up to temp and when I pulled up on the drive the tickover fluctuates and hunts between 1000rpm & 2000 ish rpm :-[

What are the steps to diagnosis ? What would be the next thing to check ?

Good news is cleaning the IACV has stopped the intermittent stalling !! :)

Need to do some miles in her from Thurs next week and at the moment I dont trust it to the bottom of the road!!

??????
Check for air leaks

You mean on the breather hoses ?
Logged
If its rusty cut it out.
If its dry, oil it.
If its dull, shine it.
If its stuck.......smack it with a hammer of course !!

Shelby

  • Intermediate Member
  • ***
  • Offline Offline
  • Gender: Male
  • Sleaford, Lincolnshire
  • Posts: 332
    • View Profile
Re: Erratic Tickover - Hunting.
« Reply #5 on: 22 July 2011, 11:23:07 »
I would check all the main trunking is intact and connected securely.  Check the breather hoses are connected securely and have no splits, cracks etc.

Did you put a new IACV gasket on it (and throttle body gasket if you took that off) or put the old ones back on?

I am not expert  :P just comparing to what I did with mine.  I have a split in my intake trunking on the throttle body, have had to patch it up with a ton of insulting tape at the moment until I can get it replaced.
Logged

Entwood

  • Omega Queen
  • *****
  • Offline Offline
  • Gender: Male
  • North Wiltshire
  • Posts: 19566
  • My Old 3.2 V6 Elite (LPG)
    • Audi A6 Allroad 3.0 DTI
    • View Profile
Re: Erratic Tickover - Hunting.
« Reply #6 on: 22 July 2011, 11:24:14 »
Quote
Quote
Quote
Sorry if this has been covered before in here but work means I only get a few minutes to look !!  ::)

After cleaning out the IACV and all relevant breathers last night (found a very good guide on here) I took her for a test run up to temp and when I pulled up on the drive the tickover fluctuates and hunts between 1000rpm & 2000 ish rpm :-[

What are the steps to diagnosis ? What would be the next thing to check ?

Good news is cleaning the IACV has stopped the intermittent stalling !! :)

Need to do some miles in her from Thurs next week and at the moment I dont trust it to the bottom of the road!!

??????
Check for air leaks

You mean on the breather hoses ?

Everywhere !!!

Spray around lightly with carb cleaner whilst the engine is running, especialy vac lines and plenum... if/when the engine note suddenly changes thats the air leak .. the carb cleaner has been sucked in as unmetered fuel and the engine note changes.

Fix leak, wipe with paper towel .. result ... engine runs properly and is nice and clean to boot .. :)
« Last Edit: 22 July 2011, 11:25:07 by entwood »
Logged

DeRangeRC

  • Newbie
  • *
  • Offline Offline
  • Gender: Male
  • The Peak District (mostly)
  • Posts: 16
  • Taking it on one job at a time.
    • View Profile
Re: Erratic Tickover - Hunting.
« Reply #7 on: 22 July 2011, 11:30:28 »
Quote
I would check all the main trunking is intact and connected securely.  Check the breather hoses are connected securely and have no splits, cracks etc.

Did you put a new IACV gasket on it (and throttle body gasket if you took that off) or put the old ones back on?

I am not expert  :P just comparing to what I did with mine.  I have a split in my intake trunking on the throttle body, have had to patch it up with a ton of insulting tape at the moment until I can get it replaced.

Yeh new IACV gasket, didnt have the throttle body off. ?? Will be checking the Air intake now though...."where is me tape"  :)
Logged
If its rusty cut it out.
If its dry, oil it.
If its dull, shine it.
If its stuck.......smack it with a hammer of course !!

DeRangeRC

  • Newbie
  • *
  • Offline Offline
  • Gender: Male
  • The Peak District (mostly)
  • Posts: 16
  • Taking it on one job at a time.
    • View Profile
Re: Erratic Tickover - Hunting.
« Reply #8 on: 22 July 2011, 11:33:33 »
Quote
Quote
Quote
Quote
Sorry if this has been covered before in here but work means I only get a few minutes to look !!  ::)

After cleaning out the IACV and all relevant breathers last night (found a very good guide on here) I took her for a test run up to temp and when I pulled up on the drive the tickover fluctuates and hunts between 1000rpm & 2000 ish rpm :-[

What are the steps to diagnosis ? What would be the next thing to check ?

Good news is cleaning the IACV has stopped the intermittent stalling !! :)

Need to do some miles in her from Thurs next week and at the moment I dont trust it to the bottom of the road!!

??????
Check for air leaks

You mean on the breather hoses ?

Everywhere !!!

Spray around lightly with carb cleaner whilst the engine is running, especialy vac lines and plenum... if/when the engine note suddenly changes thats the air leak .. the carb cleaner has been sucked in as unmetered fuel and the engine note changes.

Fix leak, wipe with paper towel .. result ... engine runs properly and is nice and clean to boot .. :)

Cheers Entwood, Will try all that later...... and if this doesnt work what would be next ? Need to know worst case  :(

Cam cover gasket ?  :-/
Logged
If its rusty cut it out.
If its dry, oil it.
If its dull, shine it.
If its stuck.......smack it with a hammer of course !!

Entwood

  • Omega Queen
  • *****
  • Offline Offline
  • Gender: Male
  • North Wiltshire
  • Posts: 19566
  • My Old 3.2 V6 Elite (LPG)
    • Audi A6 Allroad 3.0 DTI
    • View Profile
Re: Erratic Tickover - Hunting.
« Reply #9 on: 22 July 2011, 12:18:41 »
Quote
Quote
Quote
Quote
Quote
Sorry if this has been covered before in here but work means I only get a few minutes to look !!  ::)

After cleaning out the IACV and all relevant breathers last night (found a very good guide on here) I took her for a test run up to temp and when I pulled up on the drive the tickover fluctuates and hunts between 1000rpm & 2000 ish rpm :-[

What are the steps to diagnosis ? What would be the next thing to check ?

Good news is cleaning the IACV has stopped the intermittent stalling !! :)

Need to do some miles in her from Thurs next week and at the moment I dont trust it to the bottom of the road!!

??????
Check for air leaks

You mean on the breather hoses ?

Everywhere !!!

Spray around lightly with carb cleaner whilst the engine is running, especialy vac lines and plenum... if/when the engine note suddenly changes thats the air leak .. the carb cleaner has been sucked in as unmetered fuel and the engine note changes.

Fix leak, wipe with paper towel .. result ... engine runs properly and is nice and clean to boot .. :)

Cheers Entwood, Will try all that later...... and if this doesnt work what would be next ? Need to know worst case  :(

Cam cover gasket ?  :-/

Not a chance .. that will give you an oil leak outwards .not an airleak inwards.

You have disturbed a pipe/seal somewhere that is giving you an airleak. THAT is what causes hunting/erratic idling .. nowt else .. :)
Logged

DeRangeRC

  • Newbie
  • *
  • Offline Offline
  • Gender: Male
  • The Peak District (mostly)
  • Posts: 16
  • Taking it on one job at a time.
    • View Profile
Re: Erratic Tickover - Hunting.
« Reply #10 on: 22 July 2011, 13:09:41 »
Quote
Quote
Quote
Quote
Quote
Quote
Sorry if this has been covered before in here but work means I only get a few minutes to look !!  ::)

After cleaning out the IACV and all relevant breathers last night (found a very good guide on here) I took her for a test run up to temp and when I pulled up on the drive the tickover fluctuates and hunts between 1000rpm & 2000 ish rpm :-[

What are the steps to diagnosis ? What would be the next thing to check ?

Good news is cleaning the IACV has stopped the intermittent stalling !! :)

Need to do some miles in her from Thurs next week and at the moment I dont trust it to the bottom of the road!!

??????
Check for air leaks

You mean on the breather hoses ?

Everywhere !!!

Spray around lightly with carb cleaner whilst the engine is running, especialy vac lines and plenum... if/when the engine note suddenly changes thats the air leak .. the carb cleaner has been sucked in as unmetered fuel and the engine note changes.

Fix leak, wipe with paper towel .. result ... engine runs properly and is nice and clean to boot .. :)

Cheers Entwood, Will try all that later...... and if this doesnt work what would be next ? Need to know worst case  :(

Cam cover gasket ?  :-/

Not a chance .. that will give you an oil leak outwards .not an airleak inwards.

You have disturbed a pipe/seal somewhere that is giving you an airleak. THAT is what causes hunting/erratic idling .. nowt else .. :)

Phew.... thats good news !! :)

Will pop out with my carb cleaner and paper towel this evening and find that leak.

OOF rules   8-)
Logged
If its rusty cut it out.
If its dry, oil it.
If its dull, shine it.
If its stuck.......smack it with a hammer of course !!
Pages: [1]   Go Up
« previous next »
 

Page created in 0.025 seconds with 18 queries.