Carbed 914 Problem |
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Carbed 914 Problem |
microsa |
Mar 8 2005, 06:17 PM
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#1
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Member Group: Members Posts: 94 Joined: 20-February 03 From: San Antonio, Tx Member No.: 329 |
I am doing some work on the 914 that I built and sold last year and have run
into something that has me stumped. The car: 2056cc WebbCam #86 grind (I think) IDF 44s Stock valves w/heavy duty springs (bus I think) Carbs matched to intake, intake matched to heads, no porting, just 'cleaned up'. 050 Dizzy w/electronic ignition (Compufire) Taylor wires Bosch Copper Plugs (new set) MSD 6AL Facet Fuel pump Facet Pressure Regulator (set at 2psi) Car has been running great for the past two years, then at last months autocross, it started acting as if it was running into a rev limiter (goes 'soft') at about 5500 rpm instead of at the 6500 rpm 'pill' in the MSD box. I first tried removing the pill which should remove any MSD induced rev limit. Problem was still there. Checked all wiring and all looked fine, even screwed in a new set of plugs at the autocross. Still fall on it's face at 5500 or so. Below 5500 the car is flawless. Fast forward to this week. Took the MSD box out of the system, problem still there and I noticed that it seemed to be intermittent; sometime it would rev to 6500 the next time it would only go to 5500. Next I removed the CompuFire and installed a new set of points. Problem still there. Installed new cap and wires, no change. I next checked all the fuel filters (one before the pump, one before the regulator) all clean, but I replaced them anyway. No change in performance, still goes soft. Took the tops off the carbs to check float bowls; all clean and levels are correct. Removed and cleaned all the main and idle jets. I installed a new fuel pressure regulator and fuel pump. No change. The car idles great and runs great up to 5500 rpm or so. The odd thing is it feels exactly like a soft rev limiter. Ideas? TIA Mike Allen San Antonio, TX |
Root_Werks |
Mar 9 2005, 12:44 PM
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#2
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Village Idiot Group: Members Posts: 8,456 Joined: 25-May 04 From: About 5NM from Canada Member No.: 2,105 Region Association: Pacific Northwest |
(IMG:http://www.914world.com/bbs2/html/emoticons/agree.gif) If you have tired springs, this could be your problem. I guess it could be a number of things, but don't rule this one out. |
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