What could it be?, bucking all over the place |
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What could it be?, bucking all over the place |
nebreitling |
Nov 22 2003, 08:31 PM
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#1
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Member Emeritus Group: Members Posts: 3,314 Joined: 26-March 03 From: San Francisco Member No.: 478 |
Hi all
i've had a bucking problem that started about a week ago, can't seem to figure it out. it happens all over the RPM range, at any throttle position, warmed up or cold. power is down, fuel consumption is up, and there seems to be an inordinate amount of water coming out the tail pipe. what i've done: -check dwell (good) -check timing (good) -adjust fuel pressure (to a steady 30psi) -replace CHT [TS2] (this was a bitch but here's a tip: i made a modified socket driver (with room for the wire) out of a solid piece of oak wood -- worked like a charm!) -filled up with 91 octance gas and STP red fuel treatment (thought it may have been bad gas) at first, it ran much better (for like 15 minutes). but after shutting it off for 2 minutes, it began to studder and buck again like before -- as if running on only 3 cylinders... tomorrow i'm going to take a look at the injectors, maybe tear into the dizzy.. any other suggestions? to this board, i bow down.... (IMG:style_emoticons/default/pray.gif) nathan (IMG:style_emoticons/default/beer.gif) |
nebreitling |
Nov 22 2003, 08:32 PM
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#2
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Member Emeritus Group: Members Posts: 3,314 Joined: 26-March 03 From: San Francisco Member No.: 478 |
btw
also opened up the TPS -- still looks good. nathan |
redshift |
Nov 22 2003, 08:34 PM
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#3
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Bless the Hell out of you! Group: Members Posts: 10,926 Joined: 29-June 03 Member No.: 869 |
Does any of this help you?
http://www.914world.com/bbs2/index.php?act...t=ST&f=2&t=6776 Mine was acting up today. M |
seanery |
Nov 22 2003, 08:40 PM
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#4
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waiting to rebuild whitey! Group: Retired Admin Posts: 15,852 Joined: 7-January 03 From: Indy Member No.: 100 Region Association: None |
make sure all of your injectors are connected properly, sounds easy, is easy. I had that problem once with my 74 2.0.
easiest fix yet! Also, is your fuel filter good? Low fuel can bring the crud out of an old, rusty tank. Try not to get below 1/4 tank and it'll help. My 72 did this last week, luckily I knew the symptoms as my 356 used to do it under 1/3 tank. Fill it and give it some carb/fi/fuel cleaner and it'll fix it if that's the problem. |
SirAndy |
Nov 22 2003, 09:34 PM
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#5
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Resident German Group: Admin Posts: 41,625 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California |
check the grounds. where the white wires ground to the engine-block.
check yer spark plugs. and the plug-cables. make sure none is loose. points. do you still have points? was the fuel tank really low about a week ago? like, you almost ran out of gas? if so, replace the fuel filter. it might be clogged up. Andy |
john rogers |
Nov 22 2003, 09:39 PM
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#6
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Senior Member Group: Members Posts: 1,525 Joined: 4-March 03 From: Chula Vista CA Member No.: 391 |
Injection points in the distributor need replacement.
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Brad Roberts |
Nov 23 2003, 05:37 AM
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#7
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914 Freak! Group: Members Posts: 19,148 Joined: 23-December 02 Member No.: 8 Region Association: None |
What John said. (IMG:style_emoticons/default/smilie_flagge24.gif)
Trigger points are bad. Seen it about 5 times this year. B |
nebreitling |
Nov 23 2003, 03:39 PM
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#8
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Member Emeritus Group: Members Posts: 3,314 Joined: 26-March 03 From: San Francisco Member No.: 478 |
Thanks, guys
i'll crack open the dizzy and change the fi trigger points. might as well change the fuel filter, too... i appreciate the advice. (IMG:style_emoticons/default/beerchug.gif) n |
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