First drive running rough, 2.0 weber 40's |
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First drive running rough, 2.0 weber 40's |
skota23 |
Feb 20 2023, 09:10 AM
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#1
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Newbie Group: Members Posts: 35 Joined: 28-November 22 From: Madison, WI Member No.: 26,993 Region Association: Upper MidWest |
Hi Folks,
I was able to take my new to me 914 for a short drive yesterday. The car is a 74 with what I think is the original 2.0. It has Dual weber 40's and what I think is the stock distributor. The cap and rotor look practically new and the plug wire in good condition. It wouldn't start a few weeks ago and I pulled the plugs (NGK 7) and cleaned them, fired right up after that (Never had webers before and I think I flooded the cycling a little pumping the gas pedal thinking it would help start. Other observations. The few times I have started it (usually after sitting over a week) I crank the engine, and give a dab of the gas pedal to get it to fire, usually takes several tries to get. running. After warming up a bit engine goes through revs well. On the drive the engine runs very rough usually between 2-3k its barely pulling. Lots of hesitation and at odd times it pops to live a pulls great. My first thought is to pull the carbs, do a thorough cleaning and check to see what jets are fitted and the condition of the floats. Also planned are a timing check, valve adjust, oil and filter, fuel filter. Is there any other details I can provide for suggestions on how to get things running well? (IMG:style_emoticons/default/poke.gif) Thank you! Steve Attached thumbnail(s) |
flyer86d |
Feb 21 2023, 05:44 AM
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#2
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Member Group: Members Posts: 429 Joined: 12-January 11 From: Corea, Maine Member No.: 12,585 Region Association: North East States |
Try to determine which cylinder is missing at idle. Pull out the idle jet for that cylinder and blow it out. This is a very common issue with Webers as they run up thru mid throttle and RPM range on their idle jets. I carry a stubby screwdriver in my car the remove the idle jets at the side of the road.
Charlie |
rfinegan |
Feb 21 2023, 07:39 AM
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#3
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Senior Member Group: Members Posts: 973 Joined: 8-February 13 From: NC Member No.: 15,499 Region Association: MidAtlantic Region |
A plugged or partly pugged idle jet will pop and low power and run poorly like a dead cylinder. When it hits the main circuit it will come alive again and pull good .
Try to determine which cylinder is missing at idle. Pull out the idle jet for that cylinder and blow it out. This is a very common issue with Webers as they run up thru mid throttle and RPM range on their idle jets. I carry a stubby screwdriver in my car the remove the idle jets at the side of the road. Charlie |
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