SOS, I was driving about 25 at around 3K rpm and!!!!!&a |
|
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. |
|
SOS, I was driving about 25 at around 3K rpm and!!!!!&a |
obscurity |
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 |
falconfp2001 |
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 |
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? |
Rand |
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. |
ConeDodger |
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 |
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... |
ConeDodger |
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 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) |
benalishhero |
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.
|
obscurity |
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 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 |
stugray |
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 |
messix |
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. |
euro911 |
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) |
Lo-Fi Version | Time is now: 7th June 2024 - 06:12 PM |
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 ... |