Why do carbs cause cold-start problems?
One such was to floor the accelerator pedal to set the fast idle choke and fast idle cams, then set the throttle about one third open to get enough air into the engine. Fuel injection relieves us of such chores; it controls the air by bypassing the closed throttle, admitting more when cold without assistance.
Why is my carb not drawing fuel in?
Maybe the carb does need cleaning AND there is a separate issue. And maybe you didn’t see the related conversation and is why you jumped to conclusions. Gas is making its way to the carb or else the plunger would have no affect. But yes gas is having a problem in-between the carb fuel inlet and somewhere before the plunger.
Why does an engine start easier on a cold morning?
Warm starts should be easier, which is why an engine which is a “pig” on a cold morning will start easily for the rest of the day. The answer is obvious; a warm engine helps fuel vaporisation and fuel is less likely to condense when engine internals are warm.
What’s the starter number on a BMW 1035r?
See SI 61 002 77 (1035R) of BMW Munich, Sept. 1977. Starter relay, BMW number 61 31 1 243 207, Bosch 0 332 014 118. Horn relay, BMW number 61 31 1 354 393, Bosch 1 332 014 406. Do not mix up the relays.
How does a carburetor cold start engine work?
Cold Starting. Most cold starting problems with engines using carburetors are tied to the choke, which is a valve at the top of the carburetor that controls the mixture of fuel and air delivered to the cylinders. When the engine is started, it needs a rich air/fuel mixture, and the choke reduces the air supply.
Can a car start with no fuel in the carburetor?
It acts like there is no fuel in the carburetor and needs to crank for several (4+) tries before it starts. Once it starts, it will start instantly anytime afterwards until it sits again. The engine is stock except for an HEI distributor (GM). The engine runs great once it’s started.
Why was the carburetor replaced in the 1980s?
It was because of hard starting in cold weather, and the need for cleaner emissions, that carburetors were replaced in the 1980s with computerized fuel-injection systems. A carburetor blends vaporized fuel with a regulated amount of air for combustion in the engine’s cylinders.
Why was fuel injection introduced to replace carburetors?
When fuel injection engines were introduced to replace carburetors, they were designed to solve cold starting problems by using a cold start injector, which would spray additional fuel into the intake manifold when the engine was started. AA1Car.com: How to Diagnose and Repair Carburetor Problems.