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BigAl P4
Joined: 06 May 2003 Posts: 2992 Location: U.K Surrey
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Posted: Fri Jan 30, 2009 8:14 pm Post subject: 16v bogging down when cold |
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Hey guys, I used to park my car facing downhill but now face uphill.
The car starts, idles and fast idles ok. when i go to pull away it bogs down and i have to keep the revs up quite high.
Is this normal? I used to face downhill so it might have always done this but I never noticed.
Any ideas? _________________ x2 33 16v
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icky Alfasud
Joined: 20 Mar 2003 Posts: 70 Location: Lismore NSW Australia
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Posted: Fri Jan 30, 2009 10:23 pm Post subject: |
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Al,
Fuel draining from the lines back to the tank?
Can you check the fuel filter before and during cranking for volume?
If it's the cold affecting it... Then move.
May I suggest this place?
Quote: |
Melbourne has experienced a record heatwave, with three days over 43 degrees this week and the CBD reaching 44.2 degrees at 2:30pm AEST.
www.weatherzone.com.au
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Cheers _________________ Specialization is For Insects
1988 33 1.5 S 8V |
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BigAl P4
Joined: 06 May 2003 Posts: 2992 Location: U.K Surrey
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Posted: Fri Jan 30, 2009 10:36 pm Post subject: |
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icky, lol
id love to move somewhere hot.
How would i go about
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Can you check the fuel filter before and during cranking for volume? |
I have heard that these fuel filters are a PITA. _________________ x2 33 16v
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john 33_16v 16 Valve
Joined: 27 May 2005 Posts: 1406 Location: herts, uk
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Posted: Fri Jan 30, 2009 10:36 pm Post subject: Re: 16v bogging down when cold |
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BigAl wrote: |
Is this normal? |
How steep is the hill?
John _________________ If it aint broke, fiddle with it until it is!
- - - - - - - - - - - - - -
93 33 16v Mirtle Met
08 Fiat Grande Punto Exotica Red
90 Yamaha FZR600 Genesis- Silky white/red/blue |
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BigAl P4
Joined: 06 May 2003 Posts: 2992 Location: U.K Surrey
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Posted: Fri Jan 30, 2009 10:43 pm Post subject: |
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hey John
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How steep is the hill? |
not very, there are no gradient markings as its a side street. when my handbrake had just been adjusted 1 click was enough to hold the car. _________________ x2 33 16v
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icky Alfasud
Joined: 20 Mar 2003 Posts: 70 Location: Lismore NSW Australia
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Posted: Fri Jan 30, 2009 10:45 pm Post subject: |
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Al,
I cheated earlier, I had wacked in one of the el cheapo clear plastic filters in the engine bay... Can never have enough clean fuel...
Cheers _________________ Specialization is For Insects
1988 33 1.5 S 8V |
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BigAl P4
Joined: 06 May 2003 Posts: 2992 Location: U.K Surrey
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icky Alfasud
Joined: 20 Mar 2003 Posts: 70 Location: Lismore NSW Australia
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Posted: Sat Jan 31, 2009 12:11 am Post subject: |
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Al,
With the fuel injection, does the fuel tank and lines get pressurised?
Could be perished rubber seals on the fuel cap????
Cheers _________________ Specialization is For Insects
1988 33 1.5 S 8V |
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BigAl P4
Joined: 06 May 2003 Posts: 2992 Location: U.K Surrey
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lee16v 16 Valve
Joined: 29 Jun 2005 Posts: 1429 Location: Devon, UK
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Posted: Sat Jan 31, 2009 12:28 pm Post subject: |
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Have you checked the throttle body balance Al? Mine used to bog down when cold really bad until I adjusted it. |
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BigAl P4
Joined: 06 May 2003 Posts: 2992 Location: U.K Surrey
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Posted: Sat Jan 31, 2009 8:45 pm Post subject: |
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lee16v wrote: |
Have you checked the throttle body balance Al? Mine used to bog down when cold really bad until I adjusted it. |
hey lee, yup i did that not to long ago with a synchrometer
I have new rotor arm and dizzy cap, i will fit them tomorrow morning and see if that helps.
Dirty injector, wouldn't it happen all the time though?
Another symptom is that when starting it idles really low and then very slowly starts to rise to proper idle speed after about 30 secs, idle valve? I was thinking of cleaning it with wd40. Dont think the idle valve has anyhting to do with bogging down when cold under load? _________________ x2 33 16v
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Admin Site Admin
Joined: 19 Feb 2003 Posts: 1223 Location: Stafford, UK
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Posted: Sat Jan 31, 2009 10:02 pm Post subject: |
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Hi
The system needs high fuel pressure for the car to start, so not going to be a case of the fuel draining away.
That said, my P4 does a similar thing sometimes. Starts and idles fine, accepts throttle no problem, but regularly stalls once I have reversed out of the drive and go to change to first.
All the best
Keith _________________ I owe, I owe, its off to work we go.
Bimota Forum
Stafford Christmas Lights
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BigAl P4
Joined: 06 May 2003 Posts: 2992 Location: U.K Surrey
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Admin Site Admin
Joined: 19 Feb 2003 Posts: 1223 Location: Stafford, UK
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Posted: Thu Feb 05, 2009 12:06 am Post subject: |
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Hi
Only time it does it to me is having reversed out of the drive. Start it and leave it idling for a bit before reversing and it is fine.
Probably does need the throttle bodies balancing though.
All the best
Keith _________________ I owe, I owe, its off to work we go.
Bimota Forum
Stafford Christmas Lights
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BigAl P4
Joined: 06 May 2003 Posts: 2992 Location: U.K Surrey
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Posted: Thu Feb 05, 2009 12:45 am Post subject: |
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hey keith,
I have already balanced the throttle bodies not to long ago. Changing the dizzy cap and rotor arm made no difference, i have to feather the throttle.
I have now bug erd up my idle valve lol, but it still idles and i still have to feather the throttle,,, go figure. _________________ x2 33 16v
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