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Adams77
Joined: 07 Oct 2008 Posts: 142 Location: Statham, GA
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Posted: Fri Oct 17, 2008 4:12 pm Post subject: No power up hills at highway speeds |
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On my way home from work (first successful round trip) I found that I dont have enough power to maintain 50-60 mph up the light inclines on 316. I assume this is not normal.
I have some help this weekend to look at my Carburetor, possibly check the compression if I have all my adapters, what else should I be looking for?
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Clyde
Joined: 03 Jun 2006 Posts: 855 Location: Athens
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Posted: Fri Oct 17, 2008 5:08 pm Post subject: |
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Check your timing and dwell. Also see if you're getting full throttle at the carb while someone else floors it (with the ignition off). Adjust the valves before the compression check too. _________________ '69 Bug, 1776, dual kadrons, Web 111 cam
Clyde's Aircooled
(706) 206 6327 |
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serprice
Joined: 26 Nov 2007 Posts: 349 Location: Statham
1974 Volkswagen Beetle
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Posted: Fri Oct 17, 2008 6:38 pm Post subject: |
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Your valves are probably tightening up. I have had to readjust valves a few times until they stop seating and stretching . Especialy if your the first person to put it on the hiway in a while. _________________ Shane Price
74 standard beetle |
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Adams77
Joined: 07 Oct 2008 Posts: 142 Location: Statham, GA
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Posted: Fri Oct 17, 2008 7:00 pm Post subject: |
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Great, wanna help with the valves too tomorrow?
Also, anyone here have or know where to get a dwell meter/ tachometer? |
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serprice
Joined: 26 Nov 2007 Posts: 349 Location: Statham
1974 Volkswagen Beetle
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Posted: Fri Oct 17, 2008 8:21 pm Post subject: |
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Sure, I will be building the super vert motor tomorrow. You can back it in the garage. I think if I walk you through some stuff you can do it. I'll help you. We can ceck it all. It doesn't take long to give a motor a good once over. Points, timing, valves, carb. You will be surprised what alittle fine tuning will do. _________________ Shane Price
74 standard beetle |
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Mountain Power House
Joined: 26 Jul 2006 Posts: 879 Location: Aircooled Heaven USA
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Posted: Fri Oct 17, 2008 11:02 pm Post subject: |
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Lots of things can attribute to this.. Any unknown engine is a crapshoot.
Sounds like you need a real tune up as any 1600 should maintain 55 MPH up those hills, engine tuning is everything. Driving around out of tune can cost you big bucks.
The last time I had to drve a VW wide ass open up a hill I tried to blow the engine up.. Now it has 250 ponies :-) (and will be 350 by mid 09!) _________________ Jake Raby
57 Oval
64 Porsche 356C Outlaw
66 Bug -The Plague Returns!
73 VW Thing (Will I ever finish it?)
73 Superbeetle (Suby Power!)
76 Porsche 912E (X3!)
79 VW Iltis 4X4 |
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serprice
Joined: 26 Nov 2007 Posts: 349 Location: Statham
1974 Volkswagen Beetle
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Posted: Sat Oct 18, 2008 12:06 am Post subject: |
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When I first put my bug on the road I built a "scrap iron" motor just to run while I fixed up the rest of the car, and when I say scrap I mean nothin new but three qts. of oil and a crank seal. I mean this thing had one f.i. head and one carb head, some old p/c that probably had 150k on them and a case that was .060 over and worn pretty good past that. An h30 carb with adapter and a 120 mainjet and I still cruised from Madison to Conyers afew times a week. Thats on I20 runnin 70-75mph and it did good on the hills. _________________ Shane Price
74 standard beetle |
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Adams77
Joined: 07 Oct 2008 Posts: 142 Location: Statham, GA
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Posted: Sat Oct 18, 2008 8:02 pm Post subject: |
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Follow up:
Many thanks to Shane "serprice" for all the help.
Not only did I still have a vacuum leak but I had the wrong distributor as well.
Still doesnt charge up the hills but at least it holds its own now. |
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Adams77
Joined: 07 Oct 2008 Posts: 142 Location: Statham, GA
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Posted: Mon Oct 20, 2008 8:19 am Post subject: |
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Well I forgot to knock on wood
6:45 am I made it a mile from the house.
The engine started sputtering and then a lot of backfiring, so I shut it down and called the wife to come and rescue me.
Distributor? The reason I ask is the car came with two of them (one in the glovebox) and neither look new. I am thinking about buying one of the ebay SVDA with the "hot spark" ignitions.
Anyone have an extra "good" dizzy I can borrow to see if this really is the problem? |
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Adams77
Joined: 07 Oct 2008 Posts: 142 Location: Statham, GA
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Posted: Mon Oct 20, 2008 7:21 pm Post subject: |
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Limped home this evening and started looking for something broke. I didnt find anything.
THe dizzy was still in time
The carb had gas,
So................
I pulled the 34 carb off and soldered the hole in the throttle plate, boy what a frigging difference. It is a whole new carb now, I can idle way down (hence the need for a dwell/tach meter)
Reset the idle screws -2 on the left- rechecked timing and went for a ride. Noticeable difference off idle and up to 45- 50 mph, but it still just gives up the power above 50.
What the heck? am I shifting too early? I go into 4th around 50.
My last guess is the fuel pump not delivering enough fuel, but that doesnt make a lot of sense because I can run up to 45 or so with no problem.
I am afraid of a compression test but I figure that is next. Everytime I break out the comp tester something gets torn down and sits on my workbench for months and rarely ever works again
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serprice
Joined: 26 Nov 2007 Posts: 349 Location: Statham
1974 Volkswagen Beetle
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Posted: Mon Oct 20, 2008 8:13 pm Post subject: |
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O k man I think your problem is in your carb. There was probably something in main jet., and when you were flipping it over and working on it you dislodged it. Also your main jet may be alittle small. I want to know what size the main and air correction jets are. Do you know how to get to them? _________________ Shane Price
74 standard beetle |
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Adams77
Joined: 07 Oct 2008 Posts: 142 Location: Statham, GA
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Posted: Mon Oct 20, 2008 9:05 pm Post subject: |
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serprice wrote: | I want to know what size the main and air correction jets are. Do you know how to get to them? |
17 and 9 right?
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serprice
Joined: 26 Nov 2007 Posts: 349 Location: Statham
1974 Volkswagen Beetle
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Posted: Mon Oct 20, 2008 10:00 pm Post subject: |
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Yep. They should have a # on the face. The main should say something like127.5 ,air correction like z80 or 75 or125 . Let me know. I have a jet drill set so we can change them. I have a 132 main 75 air, and a60 idle in mine. _________________ Shane Price
74 standard beetle |
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Adams77
Joined: 07 Oct 2008 Posts: 142 Location: Statham, GA
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Posted: Thu Oct 23, 2008 7:38 am Post subject: |
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I think I found the problem. The picture is blurry but you may bbe able to see that the electrode is gone!
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