 Gradually running rougher, And tailpipe popping |
|
|
|
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG.
This site is not affiliated with Porsche in any way. Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners. |
|
|
| jeffdon |
 Feb 12 2012, 10:27 AM
Post
#1
|
|
Senior Member  Group: Members Posts: 1,094 Joined: 24-October 06 From: oakland, ca Member No.: 7,087 Region Association: None  |
So, My carbed, cammed, malloried 2056 has been steller for about 6k miles. Then on a run up to Santa Rosa it started feeling less "crisp" on acceleration, and is popping out the tailpipe when cruising along. Not loud bangs, kinda softly doing it. Getting also a bit of snorting out the carbs on start up. Going to crawl under today and check for exhaust leaks (SS exchangers).
What else should I check? Valves? Timing? Ignition circuit? Also, as an engine wears in and you start putting some miles on it, can it change in such a way that would require re-evaluating your jetting? |
   |
 
|
  |
Replies
| TheCabinetmaker |
Feb 12 2012, 12:29 PM
Post
#2
|
|
I drive my car everyday Group: Members Posts: 8,301 Joined: 8-May 03 From: Tulsa, Ok. Member No.: 666 |
Ha! that would definitely cause a weak spark
|
 |
|
| struckn |
Feb 12 2012, 12:53 PM
Post
#3
|
|
Senior Member Group: Members Posts: 1,069 Joined: 9-November 11 From: South Central York Pennsyvania Member No.: 13,764 Region Association: MidAtlantic Region |
QUOTE(vsg914 @ Feb 12 2012, 10:29 AM)  Ha! that would definitely cause a weak spark Look for arcing from the plug wires and the connection from Coil to Dizzy and plugs also. If you have electronic ignition (i.e. pertronix) Gap your plugs .040 - .050. |
|
|
|
| Porschef |
Feb 12 2012, 01:02 PM
Post
#4
|
|
How you doin' Group: Members Posts: 2,165 Joined: 7-September 10 From: LawnGuyland Member No.: 12,152 Region Association: North East States 
|
[/quote]
Look for arcing from the plug wires and the connection from Coil to Dizzy and plugs also. If you have electronic ignition (i.e. pertronix) Gap your plugs .040 - .050. [/quote] I swapped out to Pertronix, but didn't read any mention of changing the gap. Is this your experience to find it to run better with the .040-.050 setting? Thanks |
|
|
|
| jeffdon |
Feb 12 2012, 01:07 PM
Post
#5
|
|
Senior Member Group: Members Posts: 1,094 Joined: 24-October 06 From: oakland, ca Member No.: 7,087 Region Association: None |
[quote name='Porschef' date='Feb 12 2012, 11:02 AM' post='1623529']
[/quote] Look for arcing from the plug wires and the connection from Coil to Dizzy and plugs also. If you have electronic ignition (i.e. pertronix) Gap your plugs .040 - .050. [/quote] I swapped out to Pertronix, but didn't read any mention of changing the gap. Is this your experience to find it to run better with the .040-.050 setting? Thanks [/quote] (IMG:style_emoticons/default/agree.gif) |
|
|
|
Posts in this topic
jeffdon Gradually running rougher Feb 12 2012, 10:27 AM
jmill Valves
Timing
Sync/tune carbs
Check for exhaust le... Feb 12 2012, 10:49 AM
jeffdon
Valves
Timing
Sync/tune carbs
Check for exhaust l... Feb 12 2012, 10:58 AM jmill What type of linkage do you have? I gave up on th... Feb 12 2012, 11:15 AM jeffdon
What type of linkage do you have? I gave up on t... Feb 12 2012, 11:22 AM 914.SBC Mine did exactly what you are describing (keep in ... Feb 12 2012, 11:33 AM jeffdon
Mine did exactly what you are describing (keep in... Feb 12 2012, 11:34 AM mrholland2
Mine did exactly what you are describing (keep i... Feb 12 2012, 11:54 AM jeffdon
[quote name='jeffdon' post='1623460' date='Feb 12... Feb 12 2012, 11:56 AM vsg914 gradual deterioration of power would point me towa... Feb 12 2012, 12:06 PM jeffdon
gradual deterioration of power would point me tow... Feb 12 2012, 12:14 PM jeffdon Turned in the idle mixture screws, and it seems to... Feb 12 2012, 12:46 PM vsg914 Electrode is kinda hard to see, but doesn't lo... Feb 12 2012, 12:50 PM jeffdon
Electrode is kinda hard to see, but doesn't l... Feb 12 2012, 12:58 PM jmill I'd be happy with that plug. Looks to be #9. Feb 12 2012, 01:01 PM jeffdon
I'd be happy with that plug. Looks to be #9.... Feb 12 2012, 01:08 PM jeffdon Seem to have most of the sluggishness tuned out ju... Feb 12 2012, 04:21 PM mrbubblehead plugged idle jet? Feb 12 2012, 08:31 PM euro911 Are we supposed to change out our Bosch 'blue... Feb 12 2012, 08:45 PM mrbubblehead
Are we supposed to change out our Bosch 'blue... Feb 12 2012, 09:04 PM |
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:
|
Lo-Fi Version | Time is now: 2nd June 2024 - 06:52 AM |
Invision Power Board
v9.1.4 © 2024 IPS, Inc.