Carburetors, chokes, fuel pumps and all that.............
- Bookwus
- IAC Addict!
- Location: City of Roses
- Status: Offline
Carburetors, chokes, fuel pumps and all that.............
Hiya All,
Well the Bugs pretty much all back together and, for the most part, running very well. However, I am having a problem with the car dieing at stop lights. However, this only happens when it is warmed up. Matter of fact it's a very progressive kinda phenomena. Cold - no problem. Warm - dash warning lights flicker and engine cuts out sporadically as light is approached. Hot - dash warning lights on early and engine always cuts out before a complete stop.
Now I'm thinking I gotta check out the choke.
But, does anybody else out there in IACland have a different take on this? Any other possibilities as the source for this particular problem? Any helpful hints in dealing with the choke?
Engine has 100 miles on it. Timed to specs. Carb is fresh from keifernet. Manifold preheat tubes are clear. Air filter rebuilt (all parts fuctioning and thermo cable hooked up). Runs great at idle when cold.
Well the Bugs pretty much all back together and, for the most part, running very well. However, I am having a problem with the car dieing at stop lights. However, this only happens when it is warmed up. Matter of fact it's a very progressive kinda phenomena. Cold - no problem. Warm - dash warning lights flicker and engine cuts out sporadically as light is approached. Hot - dash warning lights on early and engine always cuts out before a complete stop.
Now I'm thinking I gotta check out the choke.
But, does anybody else out there in IACland have a different take on this? Any other possibilities as the source for this particular problem? Any helpful hints in dealing with the choke?
Engine has 100 miles on it. Timed to specs. Carb is fresh from keifernet. Manifold preheat tubes are clear. Air filter rebuilt (all parts fuctioning and thermo cable hooked up). Runs great at idle when cold.
I have cancer.
It does not have me.
It does not have me.
- Bookwus
- IAC Addict!
- Location: City of Roses
- Status: Offline
Hiya Spiff,
Yep, my thought exactly. I can only guess that the choke is the culprit here. That was the reason for the question in the first place. Maybe there is a possibility that I'm overlooking?spiffy wrote:sounds like something is causing it to run rich after warm up.
It will be done!Check the choke adjustment.....
Oh yeah..........that gizmo whatchamacallit thingee. I'll take a close look at it......and be sure the other doohickey is operating......you know the one with the wire hooked to it.
I have cancer.
It does not have me.
It does not have me.
- hambone
- Post-Industrial Non-Secular Mennonite
- Location: Portland, Ore.
- Status: Offline
Sounds like mixture or timing. Or even point gap.
http://greencascadia.blogspot.com
http://pdxvolksfolks.blogspot.com
it balances on your head just like a mattress balances on a bottle of wine
your brand new leopard skin pillbox hat
http://pdxvolksfolks.blogspot.com
it balances on your head just like a mattress balances on a bottle of wine
your brand new leopard skin pillbox hat
- Bookwus
- IAC Addict!
- Location: City of Roses
- Status: Offline
Hiya Bob,
Anyway, I'll go through all that and test the fuel pump pressure before I do the removal thing today. Thanks for the suggestions O Guru of the Smoothly Running Engine!
What fun!
I'm pulling the engine today. Man, I just cannot get enough of this take the engine out and put it in business. I think I'm permanently whacked.hambone wrote:Sounds like mixture or timing. Or even point gap.
Anyway, I'll go through all that and test the fuel pump pressure before I do the removal thing today. Thanks for the suggestions O Guru of the Smoothly Running Engine!
What fun!
I have cancer.
It does not have me.
It does not have me.
- hambone
- Post-Industrial Non-Secular Mennonite
- Location: Portland, Ore.
- Status: Offline
Why the hell are you pulling the engine again?
If I can help then let me know...of course I'm working today.
If I can help then let me know...of course I'm working today.
http://greencascadia.blogspot.com
http://pdxvolksfolks.blogspot.com
it balances on your head just like a mattress balances on a bottle of wine
your brand new leopard skin pillbox hat
http://pdxvolksfolks.blogspot.com
it balances on your head just like a mattress balances on a bottle of wine
your brand new leopard skin pillbox hat
- Bookwus
- IAC Addict!
- Location: City of Roses
- Status: Offline
Hiya Bob,
Actually I gotta replace that honking clutch assembly that never did seat in correctly. Still getting chatter after going through CK's sand it and clean it routine. Something off in the clutch fingers I suspect. On top of that I'm sometimes getting a gassy smell from the around the back of the Bus (not in the engine compartment strangely) and I want to take another look behind the tank firewall just to make everything's in good shape back there.
Hey! I already told ya. I'm permanently whacked!hambone wrote:Why the hell are you pulling the engine again?
Actually I gotta replace that honking clutch assembly that never did seat in correctly. Still getting chatter after going through CK's sand it and clean it routine. Something off in the clutch fingers I suspect. On top of that I'm sometimes getting a gassy smell from the around the back of the Bus (not in the engine compartment strangely) and I want to take another look behind the tank firewall just to make everything's in good shape back there.
Hah! Well at least I'll be out in the sunshine doing something I want to do. I did mention that I'm permanently whacked, didn't I?If I can help then let me know...of course I'm working today.
I have cancer.
It does not have me.
It does not have me.
- hambone
- Post-Industrial Non-Secular Mennonite
- Location: Portland, Ore.
- Status: Offline
Have you replaced the gas cap gasket? Our Beetle smelled horribly gassy and it was the gasket. (I actually just flipped it over and glued a crack, smell gone)
http://greencascadia.blogspot.com
http://pdxvolksfolks.blogspot.com
it balances on your head just like a mattress balances on a bottle of wine
your brand new leopard skin pillbox hat
http://pdxvolksfolks.blogspot.com
it balances on your head just like a mattress balances on a bottle of wine
your brand new leopard skin pillbox hat
- Bookwus
- IAC Addict!
- Location: City of Roses
- Status: Offline
Hiya Bob,
Yep, did that during the rebuild.
The gas cap well does smell a bit gassy, but I'd expect that. My wife (whose nose is much better than my own) tells me that the gassy smell seems to be coming from the crescent engine compartment vents on either side of the Bus. And remember, this is with no smell in the engine compartment proper.
This just strikes me a being plain weird. I thought it just might be from the charcoal emissions canister or its hosing. Nope. Everything there is nice and tight and smell-free. Just weird I tells ya.
Yep, did that during the rebuild.
The gas cap well does smell a bit gassy, but I'd expect that. My wife (whose nose is much better than my own) tells me that the gassy smell seems to be coming from the crescent engine compartment vents on either side of the Bus. And remember, this is with no smell in the engine compartment proper.
This just strikes me a being plain weird. I thought it just might be from the charcoal emissions canister or its hosing. Nope. Everything there is nice and tight and smell-free. Just weird I tells ya.
I have cancer.
It does not have me.
It does not have me.
- hambone
- Post-Industrial Non-Secular Mennonite
- Location: Portland, Ore.
- Status: Offline
It would mesh with the "running rich" theory.
Also check the carb mounting nuts for tightness.
Also check the carb mounting nuts for tightness.
http://greencascadia.blogspot.com
http://pdxvolksfolks.blogspot.com
it balances on your head just like a mattress balances on a bottle of wine
your brand new leopard skin pillbox hat
http://pdxvolksfolks.blogspot.com
it balances on your head just like a mattress balances on a bottle of wine
your brand new leopard skin pillbox hat
- dtrumbo
- IAC Addict!
- Location: Mill Creek, WA
- Status: Offline
I have the exact same issue. It's weird that the smell comes out the vents. It is less, if at all, noticeable in the engine compartment proper. I guess those vapors (or is that vapours) rise instead of fall. Even after changing the canister with the one you sent, I still have the problem. I'm hoping a rebuild kit in the other carb that I didn't do last winter will fix it.Bookwus wrote:... the gassy smell seems to be coming from the crescent engine compartment vents on either side of the Bus. And remember, this is with no smell in the engine compartment proper.
This just strikes me a being plain weird. I thought it just might be from the charcoal emissions canister or its hosing. Nope. Everything there is nice and tight and smell-free. Just weird I tells ya.
- Dick
1970 Transporter. 2015cc, dual Weber IDF 40's
1978 Riviera Camper. Bone stock GE 2.0L F.I.
1979 Super Beetle convertible.
... as it turns out, it was the coil!
1970 Transporter. 2015cc, dual Weber IDF 40's
1978 Riviera Camper. Bone stock GE 2.0L F.I.
1979 Super Beetle convertible.
... as it turns out, it was the coil!
- Bookwus
- IAC Addict!
- Location: City of Roses
- Status: Offline
Hiya Dick,
I've always been led to believe that hydrocarbons are actually heavier than the surrounding air and will "fall" through the air. That's why one never wants to have an open container of gasoline in a garage that houses a gas water heater. The pilot light could ignite a heavy concentration of hydrocarbons as they flow/creep along the floor.
I'm guessing that the hot engine compartment air escaping through the crescent vents is "carrying" the hydrocarbons out. But even if that were the case, wouldn't the engine compartment also smell gassy?
It's a mystery to me.
Anyway, I'm pulling the engine and I'll let you know if I find anything behind the tank wall thast might be a source for these fumes.
Oh, this a whole new dimension of wierd.dtrumbo wrote:....I have the exact same issue.
I've always been led to believe that hydrocarbons are actually heavier than the surrounding air and will "fall" through the air. That's why one never wants to have an open container of gasoline in a garage that houses a gas water heater. The pilot light could ignite a heavy concentration of hydrocarbons as they flow/creep along the floor.
I'm guessing that the hot engine compartment air escaping through the crescent vents is "carrying" the hydrocarbons out. But even if that were the case, wouldn't the engine compartment also smell gassy?
It's a mystery to me.
Anyway, I'm pulling the engine and I'll let you know if I find anything behind the tank wall thast might be a source for these fumes.
I have cancer.
It does not have me.
It does not have me.
- dtrumbo
- IAC Addict!
- Location: Mill Creek, WA
- Status: Offline
Sounds good. When you find it, you're more than welcome to come pull my engine and do the same procedure. Since you like pulling engines and all... just sayin'.
- Dick
1970 Transporter. 2015cc, dual Weber IDF 40's
1978 Riviera Camper. Bone stock GE 2.0L F.I.
1979 Super Beetle convertible.
... as it turns out, it was the coil!
1970 Transporter. 2015cc, dual Weber IDF 40's
1978 Riviera Camper. Bone stock GE 2.0L F.I.
1979 Super Beetle convertible.
... as it turns out, it was the coil!