Slight loss of power at low RPM

Reply Subscribe

Thread Tools

Search this Thread

Aug 2, 2007 | 04:25 PM

Demon355

Thread Starter

Supreme Member

iTrader: (1)

Joined: Aug 2002

Posts: 2,633

Likes: 4

From: Toronto, Ont

Slight loss of power at low RPM

When I go to take off slowly, the engine almost dies completely but then comes back and off I go. Sometimes it doesn't do it, but I guess it depends on how much I have the pedal down. What could cause this?

357ci - ported 327 heads - Torker Cam and Intake - Holley 750 DP - 10:1 C/R

Aug 2, 2007 | 05:01 PM

five7kid

Moderator

iTrader: (14)

Joined: Mar 2000

Posts: 43,187

Likes: 45

From: Littleton, CO USA

Car: 82 Berlinetta/57 Bel Air

Engine: L92/LQ4 (both w/4" stroke)

Transmission: 4L80E/4L80E

Axle/Gears: 12B-3.73/9"-3.89

Accelerator pump adjustment, or power valve issue.

Aug 2, 2007 | 05:02 PM

Demon355

Thread Starter

Supreme Member

iTrader: (1)

Joined: Aug 2002

Posts: 2,633

Likes: 4

From: Toronto, Ont

Re: Slight loss of power at low RPM

I've had a power valve plug installed. Would that be the cause? Where is the accelerator pump?

Aug 2, 2007 | 05:07 PM

xpndbl3

Supreme Member

iTrader: (5)

Joined: Jan 2002

Posts: 13,622

Likes: 5

From: Orland Park, IL

Car: 1984 Z28

Engine: SLOW carbed ls

Transmission: TH400 with brake, 8" PTC converter

Axle/Gears: moser 9" 4.11

Re: Slight loss of power at low RPM

the primary should always use a power valve, despite what some people on here state. Check out holley's website to find out where parts are, they have online manuals that explain everything.