I'll be cruisin around & decide to floor it for whatever reason and its will not respond for a second before it kicks in.

I replaced the fuel filter less than a month ago.

Any ideas on what this is and/or solutions to the problem would be appreciated. THX


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-Stanley Van Buren
84 Red Z-28 L69 auto

 

Need more info. What carb?

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350 4 bolt main, Speed-O-Motive 383 stroker kit, re-sized rods ground for clearance,Hypereutectic pistons,9.8:1 compression,HPC Coated RPM intake, Speed Demon 750 cfm carb,World Products Sportsman II heads,2.02/1.60 valves, K-Motion springs, Comp Cam 1.6 roller rockers, Lunati adv.292/230@.050 with .512 lift,Crane pushrods,Proform HEI and MSD6A box,HPC coated 1 5/8 headers, 2.5" exhaust with 40 series mufflers,TH350 with B&M 3000 stall, Powertrax NoSlip Locker, 4.11 gears.

 

Quadrajet 4-barrel

If there are different versions of that carb that were used on the L69, I dont know...

 

Look for a tech article about qjet tuning for performance. Sounds like your bogging in the secondaries.

Is performance good once it gets going?

Hmmmm, an 84 L69 with an auto dosn't sound right. Im probably wrong but i thought they all came with sticks. Oh well whatever.

That article should fix your problem.

 

Well, according to the VIN, its an L69, plus all the High Output emblems are a pretty good giveaway.

And I just checked again to be sure, yeah... it is indeed an automatic. Almost thought it might not have been, but it is.

Hmmm... seocondaries.. probably it.

 

Yeah i just thought i heard somewhere that all 84 L69's were sticks.

A problem i once had on my 86 LG4 with the q-jet was that the secondary air flaps were rubbing on the back lip of the carb. Had to file it down a bit. They should open with just a little force from your finger.

Good luck.

 

what about the jets? When's the last time that carb had a good rebuild done to it?

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1988 TA 300+hp 350 w/ TBI and Holley TB unit, Holley projection intake,
WC T-5, 3.42 gears w/ Auburn posi. MSD 6A, edelbrock TES headers, dynomax 3" cat and cat-back system, ACCEL coil, polyurethane bushings all around, aluminum driveshaft, Mr. Gasket open air cleaner.

1993 S-10 w/ 4.3L V6 TBI, slightly bigger cam, Mild polish job and 3 angle valve job on heads, Edlebrock TES headers, Dynomax cat back, MSD 6A, ADS chip

2000 Kawasaki KX 125

 

'83, '85 and '86 L69's were only offered with the 5-speed manual. For some reason, 1984 was the only year they offered both the 4-speed automatic and the manual 5-speed with the L69. I guess that makes the 1984 L69 with the 4-speed automatic pretty rare.

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'84 Z28 w/ T-tops, 420HP Stroked 383, Trick Flow aluminum heads, Tremec 5 speed, 3.73 posi rear, Edelbrock 750 cfm carb, Dual Snorkel air cleaner w/ K&N filter, Edelbrock headers & 3" exhaust, Edelbrock Strut Tower Brace, Hotchkis LCA's and Panhard Rod, there is much suspension work to come.

"Smoke 'em if you got 'em"

 

Oh thanks for the clarification. I knew there was something about the 84 L69.