C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Still need help with no power

Thread Tools
 
Search this Thread
 
Old Jul 13, 2011 | 05:31 PM
  #1  
prodjbm's Avatar
prodjbm
Thread Starter
Intermediate
 
Joined: May 2011
Posts: 33
Likes: 0
Default Still need help with no power

1985 all stock. Idle is fine, open throttle and it bogs down. have done the following so far:
Fuel pressure was checked and at 30 pounds
Cat was dropped and found it has already been cleared out
air filter is clear
fuel filter replaced
voltage was checked and at 14 volts
took to shop to put on puter and it showed said knock sensor
replaced knock sensor and pig tail today
after all the above, still have same problem.
This all started after I noticed the heater core leaking and I by passed the heater core and burped the coolong system. There wasnt a lot of anti freeze spilled on engine while by passing core. Im at a loss
Reply
Old Jul 13, 2011 | 05:40 PM
  #2  
stoydido's Avatar
stoydido
Instructor
 
Joined: Jun 2011
Posts: 182
Likes: 0
From: Bowling Green Ky
Default

I'm still old school. timing set correctly to 6*, meaning with est unplugged, idling below 1000? I realize the heater core would not affect it. no water vapor inside distr cap?
I may be thinking misfire rather than bog.
can't TPS do this? no coolant splashed on it?

ideas, maybe someone can piggyback on something.
Reply
Old Jul 13, 2011 | 06:49 PM
  #3  
jabez's Avatar
jabez
Race Director
15 Year Member
 
Joined: Apr 2004
Posts: 17,066
Likes: 3
From: Milpitas ca
Default

Did you ever check your spark plugs and wires?
Reply
Old Jul 13, 2011 | 07:00 PM
  #4  
prodjbm's Avatar
prodjbm
Thread Starter
Intermediate
 
Joined: May 2011
Posts: 33
Likes: 0
Default

Yes, forgot to mention that I did inspect the wires and pulled a plug, looks fine
Reply
Old Jul 13, 2011 | 07:07 PM
  #5  
stoydido's Avatar
stoydido
Instructor
 
Joined: Jun 2011
Posts: 182
Likes: 0
From: Bowling Green Ky
Default

Originally Posted by prodjbm
1985 all stock. Idle is fine, open throttle and it bogs down. have done the following so far:
Fuel pressure was checked and at 30 pounds
Cat was dropped and found it has already been cleared out
air filter is clear
fuel filter replaced
voltage was checked and at 14 volts
took to shop to put on puter and it showed said knock sensor
replaced knock sensor and pig tail today
after all the above, still have same problem.
This all started after I noticed the heater core leaking and I by passed the heater core and burped the coolong system. There wasnt a lot of anti freeze spilled on engine while by passing core. Im at a loss
just noticed fuel pressure 30 lbs. if that is max pressure it is prob low. ..
Reply

Get notified of new replies

To Still need help with no power





All times are GMT -4. The time now is 03:48 PM.

story-0
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-1
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-2
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-3
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-4
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-5
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-6
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-7
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-8
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-9
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE