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Hi, Don May... 1. The missing hose from the carb. to the charcoal cannister MAY be for the fuel bowls with respect to an "anti- runon" valve feature. This is a guess on my part. What this did was create a vacuum at the fuel bowls when oil pressure fell to zero through a solenoid switch when the ignition was switched off. The fuel bowls were vented to the charcoal cannister as part of the closed loop fuel system. The solenoid switch was wired "hot" which is why the PO MAY have disconnected this. 2. The line off your... MORE
Once again faced with mystery PO modifications. These have to do with the emission controls. First, particularly on California cars, one must find a proper diagram of the system, something the weak of heart should not attempt from a Haynes Manual. The car in question is a 74 Midget I assume with a stock 1275 First discrepancy . . . The manual, if correct, shows a hose from the valve cover to one of three hose connections on top of the evaporation canister, check . . . that is there. Another hose goes to the gas tank vapor collection... MORE
"Thanks Bob & Allen for the education" (You owe me big time, Don May!!:):) Assuming it's a stock 1275 you are looking at Don, the correct model of the 45DCOE for the set-up is 45DCOE13. The DCOE is my favorite performance carb. I got mine initially when the shafts of the stock SU's my PO'd '74 started leaking air and needed rebuilding. I figured what the hell and sprung for the 45DCOE tuned for the stock 1275, instead. Glad I did. Worked just fine right out of the box, with the addition of a "deep" K&N filter. Subsequently, the... MORE
Don... Dave Vizard's excellent book goes into the "differences" in good detail. Usually, the Weber sidedraught carbs. are utilized along with other performance upgrades such as cam, inlet valve size increase, flowed heads, etc., though they can be used on the stock mechanically sound motor, the benefit in the latter case mostly confined to more "quick response" rather than a true "power" increase due to scads more aiflow available by larger throats. The operative word in the foregoing is "mechanically sound". The engine in question has got to be developing good vacuum for the Weber is a "fixed venturi"... MORE
Ketil.. Fires a couple of times: Does this occur more in wet rather than dry weather? Fr'instance, when was the last time you renewed ignition wires, etc. If it is not humidity related but rather temperature related, then amount of "choke" may require adjustment. Consider: Not continuing to run for the initial start can often be a blessing in disguise with respect to initial oil pressure, whether the filter you are using is equipped with an anti-drainback valve or not. Rate of turnover: There is a certain amount of drag associated with starting with the clutch disengaged in the... MORE
