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 )

> Carbs Suck!
matteyp
post May 13 2010, 10:11 AM
Post #1


Nothing a little JB Weld can't fix...
**

Group: Members
Posts: 263
Joined: 8-June 09
From: WA
Member No.: 10,450
Region Association: Pacific Northwest



Hey everyone, I have a 71 1.7 with a single barrel webber carb and it seems like the carburator just doesnt work right. The car bogs down spits sputters and backfires when going up hills like it has no fuel going to the system. Thinking about switching over to the D-jettronic system. Whats involved and where can I pick up this whole fuel injection sytem for a descent price? Thanks

Matt

hey I retract my earlier statement. I have one two barrel webber carb
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
 
Reply to this topicStart new topic
Replies
Root_Werks
post May 13 2010, 10:30 AM
Post #2


Village Idiot
*****

Group: Members
Posts: 8,668
Joined: 25-May 04
From: About 5NM from Canada
Member No.: 2,105
Region Association: Pacific Northwest



Matt,

I've had both FI and carb's on dozens of 914's I've owned. FI IS better in almost every way, buuuuut, carbs will usually do the job and do it well. I'm going to give you an example of carb diag that I just went through this week:

Tues, my dual carb'd 914-4 2.0 was running on 3 cyl's felt like. Couple of the local teener guys reminded me to STOP driving the car until I got it figured out. So yesterday, I start from GROUND ZERO:

Test your compression if you haven't done it recently. Dropped seat? Incorrect lash? etc. I tested mine cold for the first time on this engine and came up with the following:

4-140
3-131
2-141
1-121

So for a 75' 2.0 still within spec, barely, but still cool.

Okay, so the "dead" cyl is #4 (doesn't respond to carb adjustments).

Step -2

All plugs I pulled did look nice and clean, so back in they went, not that old.

Step - 3

Double checked the points, did adjust them a little, nothing bad though.

Step - 4

Remove air cleaner tops and start car. Yup, there they are, all three cyl's popping away. I hit the throttle and kept my head over each barrel watching the action (Warning, a backfire will clean your eyebrows right off). Doing this, I noticed the accelerator pump wasn't squirting on #4.

Step - 5

Remove carb top on that side, remove needed pieces, blow through, clean, put back together.

VROOM!

4 cyls.

Does all this apply to your situation? Probably not, but I wanted to lay out a process of diagnosis of an issue. It usually winds up being something pretty simple.

Good luck and keep us posted!
User is online!Profile CardPM
Go to the top of the page
+Quote Post

Posts in this topic
matteyp   Carbs Suck!   May 13 2010, 10:11 AM
mk114   Well Mat I know people change to a carb Because o...   May 13 2010, 10:15 AM
McMark   You have one single barrel carb on there? If so, ...   May 13 2010, 10:18 AM
Phoenix 914-6GT   You have one single barrel carb on there? If so,...   May 13 2010, 10:19 AM
70_914   [quote name='McMark' post='1317799' date='May 13 ...   May 13 2010, 10:57 AM
zymurgist   70's amazing muscle cars had single carbs als...   May 13 2010, 11:25 AM
Vacca Rabite   Carbs suck? Oh yeah? Well FI blows! ;) If ...   May 13 2010, 10:20 AM
zymurgist   Single carbs are the worst. The intake runners ar...   May 13 2010, 10:25 AM
Root_Werks   Matt, I've had both FI and carb's on doze...   May 13 2010, 10:30 AM
9146986   A single progressive carb sucks. A correctly setu...   May 13 2010, 10:33 AM
dr914@autoatlanta.com   Hey everyone, I have a 71 1.7 with a single barr...   May 13 2010, 10:53 AM
matteyp   Hey everyone, I have a 71 1.7 with a single bar...   May 13 2010, 11:00 AM
Root_Werks   [quote name='dr914@autoatlanta.com' post='1317836...   May 13 2010, 12:30 PM
KELTY360   Hey everyone, I have a 71 1.7 with a single barr...   May 13 2010, 11:02 AM
matteyp   Kelty, I'm in the Seattle area. Just pm'd ...   May 13 2010, 01:10 PM
Phoenix 914-6GT   Where in the Seattle area. There is a lot of us ar...   May 13 2010, 01:13 PM
matteyp   Beacon hill area off 16th ave   May 13 2010, 03:01 PM
Phoenix 914-6GT   Cool. I think Geoff lives in Beacon Hill   May 13 2010, 03:21 PM
Root_Werks   There is a lot of local support as Jon said in thi...   May 13 2010, 04:06 PM
jmill   I love carbs. Get duals and a new cam and never l...   May 13 2010, 04:34 PM
carr914   Yep, the Single Holley/Weber carb doesn't work...   May 13 2010, 05:17 PM
Root_Werks   :beer2:   May 13 2010, 05:36 PM


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: 9th May 2025 - 02:27 PM