C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
Sponsored by:
Sponsored by:

Engine bogs down at all speeds!

Thread Tools
 
Search this Thread
 
Old Nov 27, 2001 | 04:51 PM
  #1  
John in Dayton's Avatar
John in Dayton
Thread Starter
Advanced
15 Year Member
 
Joined: Mar 1999
Posts: 65
Likes: 0
From: Dayton, OH USA OH
Default Engine bogs down at all speeds!

Need some help guys. I just replaced the points on the '73 L-48 350 smallblock (stock) two nights ago. I drove the car to work (approx. 13 miles) the next morning and the car ran fine. I get into the car to drive home after work and the car bogs down under acceleration (normal, not heavy). It also bogs down when going up slight inclines (hills) on the way home. Even when driving on the side of the road I ahd to feather the gas a whole bunch jsut to get the car home and avoid a tow charge. This same scenario happened this summer. Got any ideas? Carb rebuild? :confused:
Reply
Old Nov 27, 2001 | 04:55 PM
  #2  
MasterDave's Avatar
MasterDave
Moderator
25 Year Member
Conversation Starter
All Eyes On Me
Photogenic
 
Joined: Jun 1999
Posts: 7,117
Likes: 51
From: Dove Mountain Arizona
Default Re: Engine bogs down at all speeds! (John in Dayton)

Reset the timing and this time do not forget to tighten the dist lock down nut... :eek: I think the dist moved on you :cry
Reply
Old Nov 27, 2001 | 05:01 PM
  #3  
bence13_33's Avatar
bence13_33
Safety Car
15 Year Member
 
Joined: Aug 2000
Posts: 3,909
Likes: 26
From: Clymer PA
Default Re: Engine bogs down at all speeds! (MasterDave)

I agree with masterdave, sounds like the distributor moved on ya. Double check your timing whenever you get a chance...I think you will find your problem.
Reply
Old Nov 27, 2001 | 05:09 PM
  #4  
redwingvette's Avatar
redwingvette
Safety Car
Supporting Lifetime
20 Year Member
Active Streak: 30 Days
Active Streak: 60 Days
Liked
 
Joined: Aug 2001
Posts: 3,688
Likes: 202
From: Waterford Mi
Default Re: Engine bogs down at all speeds! (bence13_33)

Check the accelerator pump on the carb. See if it squirts fuel when you pump the pedal.
Reply
Old Nov 27, 2001 | 09:17 PM
  #5  
Shutdown1's Avatar
Shutdown1
Instructor
 
Joined: Oct 2001
Posts: 216
Likes: 0
From: Kingston Tn
Default Re: Engine bogs down at all speeds! (John in Dayton)

Dear John in Dayton,


Sorry to hear your having engine problems. Carburetor? Gee, that's the last thing I get into when I'm having trouble. In my experience, the more you leave a carburetor alone, the better off you are. Here is a short list of things you might want to check on (if you haven't already).

1) Did the points come out of adjustment after you put in new ones?
2)Vacum line disconnected or loose somewhere from crawling over engine?
3) Loose spark plug wire, or spark plug, or fouled plug? Spark plug wire grounding out?
4)Condenser loose or grounded out?
5)Air filter or fuel filter clogged?
6)Distributer cap cracked or loose?
7)Coil wire loose?
8)Water or moisture in distributer cap, or in gas?
9) Any water mixing with your oil?


I hope you find the problem and it is nothing serious. Other members have suggested checking your distributer lockdown and the timing. Carbs do mess up,but you might want to eliminate other possibilities before you blame it for your lack of power. Best holiday wishes, please post us when you find the problem.

'74 Turbocharged 350, "Molested to Perfection" , class of '71
Reply
Old Nov 27, 2001 | 10:05 PM
  #6  
Vetterodder's Avatar
Vetterodder
Safety Car
25 Year Member
Active Streak: 30 Days
Active Streak: 60 Days
Active Streak: 90 Days
 
Joined: Feb 1999
Posts: 3,631
Likes: 14
From: Fountain Hills AZ
Default Re: Engine bogs down at all speeds! (John in Dayton)

You mentioend that it did the same thing last summer. Did it fix itself that time or how did you get it fixed? In addtion to what's already been suggested, you might check fuel pressure. A fuel pump that's barely pumping or a clogged fuel filter will have you running out of gas whenever you ask for more fuel than it can provide. A clogged or collapsed exhaust will also behave like you described but I don't think that would have have fixed itself last summer.
Reply
Old Nov 27, 2001 | 10:09 PM
  #7  
lars's Avatar
lars
Tech Contributor
Supporting Lifetime Gold
25 Year Member
Conversation Starter
Photogenic
Top Answer: 3
 
Joined: Aug 1999
Posts: 14,384
Likes: 6,408
From: At my Bar drinking and wrenching in Lafayette Colorado
Default Re: Engine bogs down at all speeds! (John in Dayton)

John -
1. Replace the fuel filter.
2. Check and set dwell. Dwell should be 30-31 degrees.
3. After dwell is set to 30-31, check and verify timing to specs.

I'll bet the car will run great after you run through the 3-step checklist.
Reply
Old Nov 28, 2001 | 09:07 AM
  #8  
John in Dayton's Avatar
John in Dayton
Thread Starter
Advanced
15 Year Member
 
Joined: Mar 1999
Posts: 65
Likes: 0
From: Dayton, OH USA OH
Default Re: Engine bogs down at all speeds! (lars)

Thanks for the ideas guys. My friend set the dwell on Sunday night when we replaced the points. Not sure what he set it to. Also have to scheck the timing again. I 'll check to see if the distributor is locked down and not "moving". I'll also check the fuel filter and buy some dry gas.
Regarding having the same problem last summer, this is the first time I've tried to drive it since then. Had the same issue with the car then. Drives fine for a bout 1/2 hour. Park it for a while and then get these "bog down" problems.

:crazy: :crazy:
Reply

Get notified of new replies

To Engine bogs down at all speeds!

Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

2027 Chevrolet Silverado 1500 First Look: Everything You NEED to Know!

 Michael S. Palmer
story-1

5 Best & 5 Worst Corvette Daily Drivers

 Joe Kucinski
story-2

The Headlights of Every Corvette Generation Explained

 Joe Kucinski
story-3

5 Best & 5 Most Overrated Corvette Track Packages of All Time!

 Joe Kucinski
story-4

Every 2027 Corvette Engine Explained

 Joe Kucinski
story-5

Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette

 Verdad Gallardo
story-6

10 Ugly Corvettes That We Still Kinda Love

 Joe Kucinski
story-7

Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

 Brett Foote
story-8

10 Things Every Corvette Owner Needs (2026 Edition)

 Michael S. Palmer
story-9

8 Most "Only Corvette Owners Understand" Quirks and Problems

 Pouria Savadkouei




All times are GMT -4. The time now is 05:13 PM.

story-0
2027 Chevrolet Silverado 1500 First Look: Everything You NEED to Know!

Slideshow: Is the 2027 Chevrolet Silverado 1500 the best Silverado yet?

By Michael S. Palmer | 2026-06-16 08:01:12


VIEW MORE
story-1
5 Best & 5 Worst Corvette Daily Drivers

Slideshow: 5 best and 5 worst Corvette daily drivers

By Joe Kucinski | 2026-06-15 10:32:13


VIEW MORE
story-2
The Headlights of Every Corvette Generation Explained

Slideshow: The headlights of every Corvette generation explained

By Joe Kucinski | 2026-06-15 10:17:14


VIEW MORE
story-3
5 Best & 5 Most Overrated Corvette Track Packages of All Time!

Slideshow: The 5 best and 5 most overrated Corvette track packages ever.

By Joe Kucinski | 2026-06-09 12:46:45


VIEW MORE
story-4
Every 2027 Corvette Engine Explained

Slideshow: Every 2027 Corvette engine explained

By Joe Kucinski | 2026-06-09 12:16:31


VIEW MORE
story-5
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette

Slideshow: A Jaguar designer's personal project imagines what a modern front-engined Corvette might look like if Chevrolet revisited the golden age of the Stingray.

By Verdad Gallardo | 2026-06-08 19:53:43


VIEW MORE
story-6
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-7
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-8
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-9
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