crapin out in first, ? Options

[itsaporsche914]

ok . so my 2.0 with 44 webers. runs great, most of the time. but now i notice this. 1st gear 4k rpm , just before i shift it seems to sputter or something. never happens in 2 thru 5 . just 1st. at throttling rpms. also its sort of fumey. the sound is sort of like uhnnnnnnnnnnn and then UHNNNNNNNNNNNNN. i think its carb or linkage related. octy bar link.

[VaccaRabite]

44s are a bit big for a 2.0. That said, your top end should be screaming, not dogging.

Do you ever run the car in other gears up to that RPM?
Are your carbs balanced?
Is your jetting right?
Is you engine built for carbs, or stock with carbs on it to replace faulty djet?
Is your engine otherwise in good tune? (valves, compression, spark, etc?)

Zach

[Cap'n Krusty]

You shift at 4K RPM in first? Why?

The Cap'n

[SirAndy]

44s are a bit big for a 2.0.

(IMG:style_emoticons/default/agree.gif)

[itsaporsche914]

the car runs good most of the time. thats why im thinking linkage or something. it had the carbs installed back in 84 with the appropriate engine mods. im guessing. it only hesitates and runs strange at 3500 and up in 1st gear only. 2,3,4,5 are fine. plenty of power up to 5500. i notice it in parking lot situations . gas it hard and let off. spin tires etc. the car likes to be driven like that (IMG:style_emoticons/default/biggrin.gif)

[underthetire]

Ok, just stay with me here, cause i'm thinking as I type. if carbs were installed in 84, some 26 years ago, they need to be re-built-period. Now, as far as the 1st only problem, logic would say you were going from a idle to whatever RPM, keeping some RPM in it as you shift to 2,3,4,5. So, along my grey logic, let say the advance is sticking in the dizzy-but not totally stuck, you would get some very mild power until the weights "sprung" out giving you instant advance. Keeping the rpm up would keep them advanced. Once you went down to idle they bounce back. Does the idle vary a lot?

What do think of my grey logic ?

[itsaporsche914]

Ok, just stay with me here, cause i'm thinking as I type. if carbs were installed in 84, some 26 years ago, they need to be re-built-period. Now, as far as the 1st only problem, logic would say you were going from a idle to whatever RPM, keeping some RPM in it as you shift to 2,3,4,5. So, along my grey logic, let say the advance is sticking in the dizzy-but not totally stuck, you would get some very mild power until the weights "sprung" out giving you instant advance. Keeping the rpm up would keep them advanced. Once you went down to idle they bounce back. Does the idle vary a lot?

What do think of my grey logic ?

yes on the rebuild. ive done it twice. and have taken them all the way down and cleaned them . heres a dumb question. with carbs does the dizzy advance. i have the basic electronic type. no points. i think. this is a new problem.

[underthetire]

Ok, just stay with me here, cause i'm thinking as I type. if carbs were installed in 84, some 26 years ago, they need to be re-built-period. Now, as far as the 1st only problem, logic would say you were going from a idle to whatever RPM, keeping some RPM in it as you shift to 2,3,4,5. So, along my grey logic, let say the advance is sticking in the dizzy-but not totally stuck, you would get some very mild power until the weights "sprung" out giving you instant advance. Keeping the rpm up would keep them advanced. Once you went down to idle they bounce back. Does the idle vary a lot?

What do think of my grey logic ?

yes on the rebuild. ive done it twice. and have taken them all the way down and cleaned them . heres a dumb question. with carbs does the dizzy advance. i have the basic electronic type. no points. i think. this is a new problem.

Yes, has to. Put a 3n1 oil on the felt washer inside the dizzy under the rotor and try it.

[itsaporsche914]

ok . ill do it . thanks for the help

[itsaporsche914]

no felt. is that ok?. but i did put a few drops of 3n1 under the rotor(pulled it off) and it seems to of helped. should i get a felt washer ?

[underthetire]

no felt. is that ok?. but i did put a few drops of 3n1 under the rotor(pulled it off) and it seems to of helped. should i get a felt washer ?

Well, dunno. That helps oil the advance for longer service life. I might have an extra one or three. I'll take a look tonight. If not, I wouldn't worry about it. Just put a drop in when you change the oil.

[SirAndy]

it only hesitates and runs strange at 3500 and up in 1st gear only.

Smaller venturis should help with the off idle transition. If the venturis are too large, you don't get enough air velocity when you get on the main jets.

I had the exact same problem on my 2056. Went to smaller venturis and voila, flat spot gone ...
(IMG:style_emoticons/default/shades.gif) Andy

[tornik550]

I have a very nice set of weber 40 idfs and I am need of a set of 44 idf's- wanna trade???? (IMG:style_emoticons/default/beerchug.gif)

[ME733]

no felt. is that ok?. but i did put a few drops of 3n1 under the rotor(pulled it off) and it seems to of helped. should i get a felt washer ?

..........Yes get a felt washer.....and move the rotor back and fourth, drop of oil on the spring, in the plate if you can see it. Seems like the advance mechanism is sticking..........also check the fuel pressure and fuel pump....A weak pump may not be able to keep the float boal full under all out acceleration.(hard fast acceleration as in 1st gear... check float level, and needle and seat.....recheck the gap on the electronic "points"...........M.M.