Home  |  Forums  |  914 Info  |  Blogs
 
914World.com - The fastest growing online 914 community!
 
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.
 

Welcome Guest ( Log In | Register )

 
 Reply to this topicStart new topic
> Not running right, stumble above 3000 rpm
ripper911
post Feb 9 2012, 01:49 PM
Post #1


corde pulsum tangite
****

Group: Members
Posts: 2,920
Joined: 25-April 10
From: Powder Springs, GA
Member No.: 11,654
Region Association: South East States
The other day while driving around the car suddenly loses power and wouldn't idle, I suspected the points. I pull off on the side of the road, the coil had come loose and was sitting on top of the engine. I put the coil back, adjust the points using a peice of card stock from some type of product packaging and got it to the house, but it still wouldn't idle.
The next day I re-adjust the points using a feeler gauge and set the timing statically. It did fine on the way to work until I pulled off of the interstate. Now it runs alright until you get to around 3000-3500rpm then it stumbles and will not make any power. I can drive it at around 3000rpm in all gears and it does alright, what could the problem be?
Also, when this happens the tachometer moves wildly.

Carbureted 1911, 009 dist, black coil
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
TheCabinetmaker
post Feb 9 2012, 02:00 PM
Post #2


I drive my car everyday
*****

Group: Members
Posts: 8,300
Joined: 8-May 03
From: Tulsa, Ok.
Member No.: 666
If the negative side of the coil contacts the engine tin it can fry the condensor. I've seen a coil fall down in the fan and kill the coil and condensor and burn the points too.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
underthetire
post Feb 9 2012, 02:02 PM
Post #3


914 Guru
*****

Group: Members
Posts: 5,062
Joined: 7-October 08
From: Brentwood
Member No.: 9,623
Region Association: Northern California
Need new points and probably should replace the condenser. Tach swinging=ignition. Use a dwell meter to properly set point gap. Also check the little braided ground strap from the point plate to the body.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
DRPHIL914
post Feb 9 2012, 02:02 PM
Post #4


Dr. Phil
*****

Group: Members
Posts: 5,766
Joined: 9-December 09
From: Bluffton, SC
Member No.: 11,106
Region Association: South East States
QUOTE(ripper911 @ Feb 9 2012, 02:49 PM) *

The other day while driving around the car suddenly loses power and wouldn't idle, I suspected the points. I pull off on the side of the road, the coil had come loose and was sitting on top of the engine. I put the coil back, adjust the points using a peice of card stock from some type of product packaging and got it to the house, but it still wouldn't idle.
The next day I re-adjust the points using a feeler gauge and set the timing statically. It did fine on the way to work until I pulled off of the interstate. Now it runs alright until you get to around 3000-3500rpm then it stumbles and will not make any power. I can drive it at around 3000rpm in all gears and it does alright, what could the problem be?
Also, when this happens the tachometer moves wildly.

Carbureted 1911, 009 dist, black coil


had a very similar situation recently, the tach was jumping at higher RPM @3500-4000, - it was 2 issues, but the main was the wire was loose in the connector, and i cut the wire, put a new connector on each of them, crimping them really good, and that problem was solved- i THOUGHT i had a good connection, but it was not. then i also had an issue with the coil, changed it out and ive been good for 2 weeks. - recheck each wire going to a from the coil, also the grounds for FI if it is FI. .

good luck.

Phil

- i have hotspark not points, but i rechecked those as well. but what "under the tire" says - check both of those as well. .
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
ripper911
post Feb 9 2012, 02:03 PM
Post #5


corde pulsum tangite
****

Group: Members
Posts: 2,920
Joined: 25-April 10
From: Powder Springs, GA
Member No.: 11,654
Region Association: South East States
Thanks all, I wasn't able to get a condensor at the flaps sunday, I'll go buy one and try that first.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
TheCabinetmaker
post Feb 9 2012, 02:04 PM
Post #6


I drive my car everyday
*****

Group: Members
Posts: 8,300
Joined: 8-May 03
From: Tulsa, Ok.
Member No.: 666
Its carbed Phillp.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
TheCabinetmaker
post Feb 9 2012, 02:05 PM
Post #7


I drive my car everyday
*****

Group: Members
Posts: 8,300
Joined: 8-May 03
From: Tulsa, Ok.
Member No.: 666
That flaps condensor will get you by for a while, but get a Bosch soon.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
ripper911
post Feb 9 2012, 02:07 PM
Post #8


corde pulsum tangite
****

Group: Members
Posts: 2,920
Joined: 25-April 10
From: Powder Springs, GA
Member No.: 11,654
Region Association: South East States
QUOTE(vsg914 @ Feb 9 2012, 03:05 PM) *

That flaps condensor will get you by for a while, but get a Bosch soon.

The import auto parts store was closed sunday, they're open today. (IMG:style_emoticons/default/smile.gif)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
TheCabinetmaker
post Feb 9 2012, 02:10 PM
Post #9


I drive my car everyday
*****

Group: Members
Posts: 8,300
Joined: 8-May 03
From: Tulsa, Ok.
Member No.: 666
Points, condensor, and tools to change them should always be in the car.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
DRPHIL914
post Feb 9 2012, 02:15 PM
Post #10


Dr. Phil
*****

Group: Members
Posts: 5,766
Joined: 9-December 09
From: Bluffton, SC
Member No.: 11,106
Region Association: South East States
QUOTE(vsg914 @ Feb 9 2012, 03:04 PM) *

Its carbed Phillp.



o.k., - I've had good results with the Hotspark points and condenser replacement, - no more setting dwell or points gap- i know, kind of lazy but it takes that out of the equation.

but i had to go back to a bosch coil, i will never use anything else-

pw
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
ripper911
post Feb 9 2012, 02:19 PM
Post #11


corde pulsum tangite
****

Group: Members
Posts: 2,920
Joined: 25-April 10
From: Powder Springs, GA
Member No.: 11,654
Region Association: South East States
I just called impart, they don't have the parts but they will have them for me by 8:30am tomorrow. I don't feel like driving to AA right now.
I'll change out the points and condensor in the morning and report back.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
ripper911
post Feb 10 2012, 06:33 PM
Post #12


corde pulsum tangite
****

Group: Members
Posts: 2,920
Joined: 25-April 10
From: Powder Springs, GA
Member No.: 11,654
Region Association: South East States
After replacing the points and condensor and setting everything right twice it is running fine.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
« Next Oldest · 914World Garage · Next Newest »
 

Reply to this topicStart new topic
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:

 

Display Mode: Standard · Switch to: Linear+ · Switch to: Outline

Track this topic · Email this topic · Print this topic · Subscribe to this forum

- Lo-Fi Version Time is now: 17th May 2024 - 03:16 PM
Invision Power Board v9.1.4 © 2024  IPS, Inc.
All rights reserved 914World.com © since 2002
914World.com is the fastest growing online 914 community!
We have it all, classifieds, events, forums, vendors, parts, autocross, racing, technical articles, events calendar, newsletter, restoration, gallery, archives, history and more for your Porsche 914 ...