| [ Total Views: 567 | Total Replies: 10 | Thread Id: 14882 ] |
|
|
 fatboy
Wolfsburg Wizard
Disciple of Kol
Posts: 603
Threads: 48
Registered: November 1st, 2002
Member Is Offline
Location: Belgrave Victoria
Theme: UltimaBB Pro Blue ( Default )
Mood: Hungry!
|
 posted on October 23rd, 2003 at 06:33 PM |
|
|
Kombi - running like a dog (RUFF)
My kombi has started running really bad literaly overnight.
it idles ok but has almost no power and couldn't even get up my driveway in first gear.
Every now and I get a tremendous backfire.
All I have looked at so for is timing which is spot on ( I only did the valves a short time ago) I have noticed though that if I pull the leads of the
right hand (Drivers side ) it makes no differance to the running of the engine (both at once or one at a time).
What is the most likely cause ??
" Captain Picard, why are there no Indians on the Enterprise ? Don't you need IT Support ? "
|
|
|
 Bizarre
Super Moderator
The artist formerly known as blue74l
Posts: 12780
Threads: 734
Registered: August 25th, 2002
Member Is Offline
Location: Abbotsford, Sydney
Theme: UltimaBB Pro Blue ( Default )
|
| posted on October 23rd, 2003 at 07:58 PM |
|
|
Is this a twin carb??
If so you getting petrol there??
What about spark??
Futue te ipsum!!!
|
|
|
fatboy
Wolfsburg Wizard
Disciple of Kol
Posts: 603
Threads: 48
Registered: November 1st, 2002
Member Is Offline
Location: Belgrave Victoria
Theme: UltimaBB Pro Blue ( Default )
Mood: Hungry!
|
| posted on October 23rd, 2003 at 08:44 PM |
|
|
Yeah - twin carb.
I am getting a spark from the lead to the dizzy as I put it back but dont know about the rest yet.
Any easy way to tell if I am getting fuel ?
" Captain Picard, why are there no Indians on the Enterprise ? Don't you need IT Support ? "
|
|
|
Bizarre
Super Moderator
The artist formerly known as blue74l
Posts: 12780
Threads: 734
Registered: August 25th, 2002
Member Is Offline
Location: Abbotsford, Sydney
Theme: UltimaBB Pro Blue ( Default )
|
| posted on October 23rd, 2003 at 08:53 PM |
|
|
Take the air filter off and look down the throat of the carbs when you activate the throttle (with the motor off)
It could be a blocked idle jet so that side wont idle up to say 2000 revs.
Do it go better at high revs??
Pull an offending plug and see if it is wet. That will mean it is getting fuel but not spark.
If 2 cylinders are not firing i would bet more on the fuel as it is unlikely to loose spark to 2 cylinders.
How long since plugs, coil, condenser have been changed.
Pull the dizzy cap and make sure all is ok and clean inside
Futue te ipsum!!!
|
|
|
57 Panel
Officially Full-On Dubber
Posts: 279
Threads: 56
Registered: June 3rd, 2003
Member Is Offline
Location: Newcastle
Theme: UltimaBB Pro Blue ( Default )
|
| posted on October 24th, 2003 at 07:14 AM |
|
|
running ruff
There is a solinoid on the outer side of the carbie, the smaller one about half way along, it came loose on my 1800 and the engine had no power. No
fuel came out so I'm guessing it had something to do with air metering. Anyway I tightened it up (9mm I think) and it was fine again. :bounce
|
|
|
fatboy
Wolfsburg Wizard
Disciple of Kol
Posts: 603
Threads: 48
Registered: November 1st, 2002
Member Is Offline
Location: Belgrave Victoria
Theme: UltimaBB Pro Blue ( Default )
Mood: Hungry!
|
| posted on October 24th, 2003 at 10:32 AM |
|
|
Well I do appear to be getting a spark but dont appear to be getting any fuel.
I am getting fuel to the carbie but after that ????
What now ??? anyone ???
" Captain Picard, why are there no Indians on the Enterprise ? Don't you need IT Support ? "
|
|
|
mnsKmobi
Wolfsburg Wizard
Posts: 589
Threads: 27
Registered: August 27th, 2002
Member Is Offline
Location: Melbourne
Theme: UltimaBB Pro Blue ( Default )
|
| posted on October 24th, 2003 at 10:58 AM |
|
|
Did you check the solenoid on the carby? If it has failed or the lead has come off it will stop fuel getting through.
|
|
|
Bizarre
Super Moderator
The artist formerly known as blue74l
Posts: 12780
Threads: 734
Registered: August 25th, 2002
Member Is Offline
Location: Abbotsford, Sydney
Theme: UltimaBB Pro Blue ( Default )
|
| posted on October 24th, 2003 at 11:42 AM |
|
|
Same with the idle jet
If you can see it squirting when you activate the throttle lever that is fuel from the accelerator pump.
The fuel it gets to idle is from the idle jet and the fuel for above 3000 revs is from the main jet.
Check that solenoid first
Futue te ipsum!!!
|
|
|
fatboy
Wolfsburg Wizard
Disciple of Kol
Posts: 603
Threads: 48
Registered: November 1st, 2002
Member Is Offline
Location: Belgrave Victoria
Theme: UltimaBB Pro Blue ( Default )
Mood: Hungry!
|
| posted on October 24th, 2003 at 01:06 PM |
|
|
Thanks guys,
I have checked the solenoid and power is getting to it - when I plug/unplug it I can hear an elsctrical arcing type sound.
With the engine not running I can actually hear the fuel flowing into the left hand carbie but nothing on the right.
BTW how tight should the solenoid be ? it was lose but tighening didn't seem to make much differance ?
cheers
" Captain Picard, why are there no Indians on the Enterprise ? Don't you need IT Support ? "
|
|
|
fatboy
Wolfsburg Wizard
Disciple of Kol
Posts: 603
Threads: 48
Registered: November 1st, 2002
Member Is Offline
Location: Belgrave Victoria
Theme: UltimaBB Pro Blue ( Default )
Mood: Hungry!
|
| posted on October 24th, 2003 at 01:16 PM |
|
|
Er (Sheepish) how do I clean a jet ?
" Captain Picard, why are there no Indians on the Enterprise ? Don't you need IT Support ? "
|
|
|
68AutoBug
A.k.a.: Lee Noonan
Aircooled Master
Beetle Restorer - Experience over 138% - YIKES --
Posts: 11654
Threads: 449
Registered: August 31st, 2002
Member Is Offline
Location: SCONE in UPPER HUNTER VALLEY NSW
Theme: UltimaBB Pro Yellow
Mood: Really Mentally Ill - all of the time -
|
| posted on October 24th, 2003 at 01:56 PM |
|
|
Jets are usually very small copper or brass bolts with an even smaller hole thru the centre ... this is the jet and they can easily get blocked...
although do You run fuel filters??? they should stop anything getting into the carby.
Depending on the brand of carby You are using - Jets are located inside the fuel bowl of the carby... its best to take the carby off and pull the top
off it and clean out the Fuel bowl and any jets you can see, some times there maybe a jet in the throat of the carby.... just push a thin piece of
wire thru the centre and blow them out with air pressure if You have a compressor.. otherwise just use wire to clean them out - after You have taken
them out as there maybe some junk behind the jet also...
With the solenoid being loose, use some locktight or threadtape on the thread.. & make sure it still clicks when the wire is connected....
don't use too much pressure as the alloy the carby is made of, is fairly brittle...
Best wishes..
Lee
- [size=4]Helping keep Air Cooled VWs on the road - location: SCONE in the Upper Hunter Valley - Northern NSW 320 kms NNW of SYDNEY--- [/size]
|
|
|
68AutoBug
A.k.a.: Lee Noonan
Aircooled Master
Beetle Restorer - Experience over 138% - YIKES --
Posts: 11654
Threads: 449
Registered: August 31st, 2002
Member Is Offline
Location: SCONE in UPPER HUNTER VALLEY NSW
Theme: UltimaBB Pro Yellow
Mood: Really Mentally Ill - all of the time -
|
| posted on October 24th, 2003 at 01:59 PM |
|
|
as far as the spark goes.... if You use the genuine VW type wire spark plug leads..
You wll never have any "no spark" problems as the spark just Has to go thru the copper wire... But if You use the silicone type spark plug
leads... they will give You problems at some time... guaranteed...
Lee
- [size=4]Helping keep Air Cooled VWs on the road - location: SCONE in the Upper Hunter Valley - Northern NSW 320 kms NNW of SYDNEY--- [/size]
|
|
|
fatboy
Wolfsburg Wizard
Disciple of Kol
Posts: 603
Threads: 48
Registered: November 1st, 2002
Member Is Offline
Location: Belgrave Victoria
Theme: UltimaBB Pro Blue ( Default )
Mood: Hungry!
|
| posted on October 24th, 2003 at 02:25 PM |
|
|
Thanks guys.
I took the top of the carby and sprayed everything I could with cleaner, tightend up the solenoid (Was still loose) and now everything is once again
running smooth.
As for leads - yeah they are VW in fact I suspect they may be the original as everything else on the bus was when I got it ! - I have changed the
plugs though 
" Captain Picard, why are there no Indians on the Enterprise ? Don't you need IT Support ? "
|
|
|
