Fj40 Alcan highway help. (1 Viewer)

[AKbeardog]

Hello,
Over the past two years we've rebuilt our 1976 (ish) fj40 "Emma" with the help of many people and this forum. We are attempting to drive her to South America from Soldotna, AK. ATM we are in Fort Saint John, BC 11 days into our trip. We are having some carb issues. It seems to start up fine, but once she warms up she runs rough and misses/chugs and sputters. We can keep her running by using half choke, but at low speeds she doesn't idle and, very embarrassing, stalls are inevitable. I did some reading on the forums, and some say it might be the choke getting hung up or the mixture being a little off or even a manifold vacuum leak. I intend to investigate more when we make camp tonight. Does anyone know a good 2f mechanic in the Northwest US that might be able to help with the carb/timing issue? We'll be in Spokane and then Boise in next few weeks. If anyone is interested in following our trip (assuming we make it out of Canada) our Facebook page is https://www.facebook.com/StraightSixStraightSouth.
Cheers,
S

Our trucks specs are as follows:
rebuilt Desmogged 2F
Trollhole carb
trollhole electic dizzy
Delco Alt
2.5" HFS lift
4 speed tans w/ pto winch

 

[lcwizard]

Most likely a vacuum leak. Check for cracked vacuum lines, loose carburetor or intake bolts. If it runs with the choke on it's running lean and the choke is richening the mixture to a point in runs well.

 

[Fast Eddy]

Most likely a vacuum leak. Check for cracked vacuum lines, loose carburetor or intake bolts. If it runs with the choke on it's running lean and the choke is richening the mixture to a point in runs well.

I concur. Get some starting fluid or carb cleaner and spray it around at idle. When idle increases, you have found a leak. Careful of spraying it onto the exhaust manifold and making fire.

Check the carb mounting bolts and hope you don't have an intake manifold leak. You'd have to pull the manifolds for a new gasket.

 

[Spike Strip]

Do you have a vacuum gauge handy ?

Cruiser Mechanics:

Washington

Torfab
Lynnwood,
WA
206-659-8677
www.torfab.com

Car Tender
1706 12th Ave
Seattle, WA 98122
(206) 324-0345
Car Tender Seattle: BMW MERCEDES MINI LAND ROVER Repair

Garys Auto Service
765 Martin Road Port Townsend,
WA 98368
(360)385-7965

East Olympia Cruisers
PO Box 821,
East Olympia, WA
98540
360-701-5375

Listed by State: https://forum.ih8mud.com/60-series-wagons/349535-cruiser-mechanics-listed-state.html

 

[steverb]

do you have a header if so the carb could be freezing up?

 

[hecrod]

Well... hopefully you'll fix the problem soon... but...

DUDE!!! What a trip!!!!! Jealous, jealous, jealous...

Keep us up to date and include plenty of pictures!

 

[45Kevin]

Post this in the Peace Canyon Swamp Donkey and Coastal Cruiser sections on this form. They are listed at the bottom of the list of forums menu (forum jump box at the bottom of the page).

You will have friends to help you all the way down through BC. The greater Vancouver area has several very good cruiser shops.

 

[DSRTRDR]

I think he means these guys:

https://forum.ih8mud.com/ca-bc-peace-canyon-toyota-swamp-donkeys/

and these:

https://forum.ih8mud.com/ca-bc-coastal-cruisers/

 

[AKbeardog]

Thanks so much for the responses. I think our main problem was a awful vacuum leak under the carb. We coasted into a campsite in BC and took the carb off and the gasket that sits on the manifold was cracked and dried up. We cut some "new" gaskets out of road maps and got state side. We have some new "real" gaskets coming from SoR. I'll let you know if that helps.
Thanks again for all the help,
Spencer

 

[edwjmcgrath]

Really? Didn't the trollhole come with a gasket?
In any case you could get one at the nearest NAPA auto, or get some gasket material and make your own.

If you replace it and you've still got issues, it may be a clogged in the idle passages somewhere. I assume that you've checked the idle solenoid?


Enjoy the trip.

 

[motoloco]

Check you fuel cut solenoid wires! power AND ground!

 

[fj maverick]

Start with the simple stuff and check the oil and for vaccum leaks.

 

[4mydogs]

Hope you get it sorted out. Following your trip via the facebook page now. Safe travels!

 

[Fast Eddy]

The gaskets are supposed to be bonded to the carb insulator. Extra gaskets make extra places for leaks. If your carb insulator is good and your manifold surface is flat, you should run without gaskets or sealants

Mine is bad on one side, so I use one gasket bonded to the insulator with old-school black permatex, I believe #1. It's the only thing that will hold up against direct exposure to gasoline. Thanks to JimC for this info.

Here's a picture of a carb insulator with a bad gasket:

 

[AKbeardog]

Good to know about the bonded gasket. We just set placed a cut gasket on the insulator. When I was playing with the carb I noticed our manifold gasket seems black in one spot. We're going to head to West Washington and visit TorFab. From what I'm told, he's the guy. I'll post once we remedy the issue. Thanks for all the replies.
Cheers

 

[myquestoyota]

If you're headed south on I-5 after that visit and need help I'm halfway between Seattle and Portland so let me know.
PM'd my phone number.

 

[lcwizard]

The gaskets are supposed to be bonded to the carb insulator. Extra gaskets make extra places for leaks. If your carb insulator is good and your manifold surface is flat, you should run without gaskets or sealants

Mine is bad on one side, so I use one gasket bonded to the insulator with old-school black permatex, I believe #1. It's the only thing that will hold up against direct exposure to gasoline. Thanks to JimC for this info.



Check out Hylomar Universal Blue. Working temps of -50F to 480F or if you need better their advanced formula is -50F to 660F. Resistant to pretty much everything. Their Aerogrades are standard sealants for GE , Rolls Royce and Pratt Whitney turbine engines

 

[RattleCan]

following! what a trip. super jealous.

Good luck with the carb.

 

[ColoCruiserJeff]

What a trip indeed! Can't wait to see more pics - please post 'em up.

Would love to learn more about your rig - the roof setup is phenominal!

Best of luck on your travels-

Jeff

 

[pbgbottle]

You in the US already. There is EBI

http://www.extremebends.com/

Close to the US border if your still in BC

What border crossing you taking into the US. ?

If Pacific crossing u will blow right past my house,
Make sure ya honk on the way by. Lol
Ill be looking out the window.

Sent from iPhone