cant go fast for long....help!?, drives around town all day, but not on highway! |
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cant go fast for long....help!?, drives around town all day, but not on highway! |
rbmorrisiii |
Aug 2 2008, 03:13 PM
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#1
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Newbie Group: Members Posts: 11 Joined: 21-July 08 From: OAKLAND, CA Member No.: 9,333 Region Association: Pacific Northwest |
Ok, so i got this car ('73 1.7L) about 2 months ago. single carb - yes i know this isnt the best fuel intake, but i am going to try to make it work. I tried to drive it home - about 90 miles, but it only went about 15 miles before it slowly crapped out. losing speed unitl i had to pull over. it would start again and drive, but couldnt go fast for long.
so, I: changed fuel filter, spark plugs, oil, cleaned oil screen, pulled gas tank and ran all new fuel hoses and clamps (found a kinked line which i thought was the problem - also found the vent in the gas tank to be smashed, so i re-opened that and ran a new hose to underneath the car) the lines looked fine running through the car - and when i blew them out they seemed to be free of any clogs etc. I reconnected everything, and started her up today. same problem. she ran a little better and could run all day around town, but took her on the highway and she would only stay in 5th gear for like 20 seconds then started tanking in speed - down-shifted to 4th.....3rd...then pulled off the highway...noticed some smoke in the back so i pulled over to let her rest. the smoke was coming from the HE's - both sides on the "opening" closer to the muffler. the PO had screwed in wood screws into the gap i'm assuming to keep them from rattling, and that gap is where the smoke was flying out of. after a 15 minute rest i started up and drove for another 15 minutes with no major problems. Why wont she go on the highway! I'm stumped! I'm new to the mechanical arena so overexplain things if you think you need to. whats my next step? someone told me the timing may be messed up, 'cause when you switch to carbs you to need to adjust?!?! help! Thanks for all the help in advance, so glad to finally join the 914 world! ill have pics of my bag of bolts soon! -R.B. |
GeorgeRud |
Aug 2 2008, 03:25 PM
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#2
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Advanced Member Group: Members Posts: 3,725 Joined: 27-July 05 From: Chicagoland Member No.: 4,482 Region Association: Upper MidWest |
What are you running for a fuel pump? The carbs need a low pressure (~3.5 psi pump), but if there is not enough flow, you will not be able to run at speed.
I've had the same thing happen when a fuel pump was going south. Just a thought. Welcome to the jungle! |
rbmorrisiii |
Aug 2 2008, 04:15 PM
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#3
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Newbie Group: Members Posts: 11 Joined: 21-July 08 From: OAKLAND, CA Member No.: 9,333 Region Association: Pacific Northwest |
Ive had a hunch that its the fuel pump this whole time, but everyone tells me that the little bugger i got is fine....i guess its worth replacing - anyway to test it?
i have the fuel pressure regulator set to 4 - i cant get it to turn over for anything less than 4 (2.5/3 psi IS recommended for my carb). i forgot to mention also i rebuilt the carb too! any other thoughts? |
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