So my Cruiser officially hates me the last couple of days... (2F, with Aisin carb, 76' era)

Runs great 99.5% of the time...

But then all of a sudden, it will fall flat on its face... runs super rich, idles rough, and refuses to gain any RPM's especially when it has any load present.

Now heres the part that sucks, I am not a carb guy (I send them all out) but I have been into a few of them over the years. But, as soon as I get to some place to pull over and check it out... By they time I get out of the vehicle, pop the hood and start to mess with the carb. The problem goes away, it will run great for a couple of days... in fact it hasn't done it for several days (havn't driven it alot)...

Any quick ideas before I tug the carb off and send it to my carb guy?

Anyone think that it could be a spark issue?
(New plugs, cords, FJ60 ignitor/coil/dizzy)

Thanks in advance... :D

PS... My truck hates me this week!

Call Rich Dawkins. I hear he's back in SLC!

on edit: Say Hi from all his friends on Pirate :flipoff2: :flipoff2: :flipoff2:

Kurt.. I thought you were TBI?

btw.. any relation ?

http://sell.ksl.com/cgi-bin/classifieds.pl?db=miscautos&website=&language=&session_key=&search_and_display_db_button=on&results_format=long&db_id=47227&query=retrieval

My guess would be you have some crap in your fuel bowl. Take off the top and look.

Call Rich Dawkins. I hear he's back in SLC!

on edit: Say Hi from all his friends on Pirate :flipoff2: :flipoff2: :flipoff2:
Please, send him my love, then send it again, and again, and again. I perfer my love sent with some force in back of it :mad3: :mad3: :mad3:



Sounds like you have random crap in the bowl or, slight possibility, wierdness in the pump. Pull the top and see what ya got. It might be a small block in the jet but now I am talking out of my ass :flipoff2: PM Mark for more info.

Beat ya to it David. Kurt and I talked about this a few weeks back when the problem started. AT the time, the symptoms were a little more vague. Now I have a hunch.

Kurt, get a vacuum guage and hook it up so you can see it while you're driving. Next time it happens, see if the vacuum just drops on a steady reading, or whether the needle does a rapid up and down flicker.

And this will tell you what?

Burnt or sticking valve

And this will tell you what?

:shaking:

:shaking:

Tard

Kurt.. I thought you were TBI?

btw.. any relation ?

http://sell.ksl.com/cgi-bin/classifieds.pl?db=miscautos&website=&language=&session_key=&search_and_display_db_button=on&results_format=long&db_id=47227&query=retrieval

Not TBI yet, I literally have all the needed parts but I was holding out in favor of my trust carb :D

No relation... :D

Call Rich Dawkins. I hear he's back in SLC!

on edit: Say Hi from all his friends on Pirate :flipoff2: :flipoff2: :flipoff2:

Don't get me started... I never finished telling the story... I am out $$$ and time :flipoff2:

Kurt, get a vacuum guage and hook it up so you can see it while you're driving. Next time it happens, see if the vacuum just drops on a steady reading, or whether the needle does a rapid up and down flicker.

Will do, but I'm afraid it won't do it just because I have the gauge hooked up... :laughing: It has only done this twice (for a couple minutes each time) and then suddenly back to normal...

What are you theorizing? :confused:

PS, thanks for all the help everyone :D

That is the same question I was asking above. I can see where a sticking valve would cause the vac issue but I doubt this is your issue on such rare occassions. It might be worthwhile to hook up the gauge and drive with it while and see if it tells you anything. I would pull apart the top of the carb first.