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 )

2 Pages V < 1 2  
Reply to this topicStart new topic
> SOS, I was driving about 25 at around 3K rpm and!!!!!&a
obscurity
post Apr 12 2011, 11:28 AM
Post #21


Member
**

Group: Members
Posts: 411
Joined: 24-February 06
From: Atlanta ,GA
Member No.: 5,628
Region Association: South East States



It seems odd that it should hapopen all at once. Were you doing anything unusual when it happened?

My first guess is that you mentioned that you just got it running. Did it sit for a while? Perhaps something is blocking the fuel rail on the dead side. This doesn't explain the grinding sound though.

John
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
falconfp2001
post Apr 12 2011, 11:58 AM
Post #22


Pancho Pantera
**

Group: Members
Posts: 451
Joined: 5-December 10
From: Downey, CA
Member No.: 12,456
Region Association: Southwest Region



QUOTE(obscurity @ Apr 12 2011, 10:28 AM) *

It seems odd that it should hapopen all at once. Were you doing anything unusual when it happened?

My first guess is that you mentioned that you just got it running. Did it sit for a while? Perhaps something is blocking the fuel rail on the dead side. This doesn't explain the grinding sound though.

John


Just got it running maybe three weeks ago after sitting for about a month.

The sound was strange. It was short, load and ended quick. It was like I ginded going into a gear but i was just cruzing at 25mph at maybe 2500rpm or 3k. Then it lost power.

I was able to barely get it home. It idles but slowly and removing cylinder wires identified that Cylinder 1 n 2 are not firing but I haven't been able to do much more with it yet.

I let it idle and listened for any mechanical but it seems to turn fine just not firing.

If it is the Distributor some how, then I don't have a spare.

If it's just spark plugs then I can get those.

What if one Side of the trigger points were to go? would that create this condition?
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Rand
post Apr 12 2011, 12:01 PM
Post #23


Cross Member
*****

Group: Members
Posts: 7,409
Joined: 8-February 05
From: OR
Member No.: 3,573
Region Association: None



QUOTE
What if one Side of the trigger points were to go? would that create this condition?

See post #11

The noise is what disturbs me. What, that could cause this, would make a loud mechanical noise when it went out? Sounds like something broke, and that would probably cause damage you could see if you could get your eyes & hands on it.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
ConeDodger
post Apr 12 2011, 12:02 PM
Post #24


Apex killer!
***************

Group: Members
Posts: 23,611
Joined: 31-December 04
From: Tahoe Area
Member No.: 3,380
Region Association: Northern California



QUOTE(falconfp2001 @ Apr 12 2011, 09:58 AM) *

QUOTE(obscurity @ Apr 12 2011, 10:28 AM) *

It seems odd that it should hapopen all at once. Were you doing anything unusual when it happened?

My first guess is that you mentioned that you just got it running. Did it sit for a while? Perhaps something is blocking the fuel rail on the dead side. This doesn't explain the grinding sound though.

John


Just got it running maybe three weeks ago after sitting for about a month.

The sound was strange. It was short, load and ended quick. It was like I ginded going into a gear but i was just cruzing at 25mph at maybe 2500rpm or 3k. Then it lost power.

I was able to barely get it home. It idles but slowly and removing cylinder wires identified that Cylinder 1 n 2 are not firing but I haven't been able to do much more with it yet.

I let it idle and listened for any mechanical but it seems to turn fine just not firing.

If it is the Distributor some how, then I don't have a spare.

If it's just spark plugs then I can get those.

What if one Side of the trigger points were to go? would that create this condition?


I've not heard of one side of the trigger points going but if they are only partially plugged in to the harness the car will still run but badly...

What do your points look like? Look inside your distributor cap and see if the carbon contact is broken off. Check inside the cap and look for cracks, arching etc...
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
ConeDodger
post Apr 12 2011, 12:02 PM
Post #25


Apex killer!
***************

Group: Members
Posts: 23,611
Joined: 31-December 04
From: Tahoe Area
Member No.: 3,380
Region Association: Northern California



QUOTE(Rand @ Apr 12 2011, 10:01 AM) *

QUOTE
What if one Side of the trigger points were to go? would that create this condition?

See post #11

The noise is what disturbs me. What, that could cause this, would make a loud noise when it went out?


Crank breaking? (IMG:style_emoticons/default/blink.gif)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
benalishhero
post Apr 12 2011, 12:03 PM
Post #26


Member
**

Group: Members
Posts: 313
Joined: 28-November 07
From: Portland, Maine
Member No.: 8,384
Region Association: North East States



I agree with the valve train idea. Only take a second to take off the V/C on that side too.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
obscurity
post Apr 12 2011, 12:10 PM
Post #27


Member
**

Group: Members
Posts: 411
Joined: 24-February 06
From: Atlanta ,GA
Member No.: 5,628
Region Association: South East States



QUOTE(Rand @ Apr 12 2011, 02:01 PM) *

QUOTE
What if one Side of the trigger points were to go? would that create this condition?

See post #11

The noise is what disturbs me. What, that could cause this, would make a loud mechanical noise when it went out? Sounds like something broke, and that would probably cause damage you could see if you could get your eyes & hands on it.


This is probably a long shot but could it be something in the heads like stripped bolts in the valve train?

It would definitely start with Dave's list of tests on post #15. It will allow you to narrow down the subsystem that is at fault.

John
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
stugray
post Apr 12 2011, 04:20 PM
Post #28


Advanced Member
****

Group: Members
Posts: 3,825
Joined: 17-September 09
From: Longmont, CO
Member No.: 10,819
Region Association: None



I had a similar experience in my brothers TR4 racer.

We were running around the track and the engine made some horrible noises, then ran like crap missing & farting.

We limped back to the paddock, pulled the valve cover expecting the worst.

ONE of his rocker bolts had broken so only half of the valves were still working.
The ones on the bad side were either barely opening, or stuck shut.

I'd pull the cover.

Stu
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
messix
post Apr 12 2011, 07:24 PM
Post #29


AKA "CLUTCH KILLER"!
*****

Group: Members
Posts: 6,995
Joined: 14-April 05
From: between shit kickers and pinky lifters/ puget sound wa.north of Seattle south of Canada
Member No.: 3,931
Region Association: Pacific Northwest



sheared roll pin for the dizzy drive gear?

dizzy not properly installed [skipped the drive for a while] and not tight?


just some thoughts.....

broken cap and rotor. just takes being cracked to cause problems.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
euro911
post Apr 12 2011, 09:06 PM
Post #30


Retired & living the dream. God help me if I wake up!
*****

Group: Members
Posts: 8,851
Joined: 2-December 06
From: So.Cal. & No.AZ (USA)
Member No.: 7,300
Region Association: Southern California



With the loud noise you mentioned, and all the input provided, its starting to sound more logical that it's a valve train issue.

It is possible that the rocker arms either lost their adjustment or came loose on that side of your engine (IMG:style_emoticons/default/idea.gif)



User is offlineProfile CardPM
Go to the top of the page
+Quote Post

2 Pages V < 1 2
Reply to this topicStart new topic
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:

 



- Lo-Fi Version Time is now: 7th June 2024 - 06:12 PM