When a 1986 Chevy Caprice leaks oil through the carburetor, it typically indicates a problem with the engine's internal components, such as worn piston rings or valve seals, allowing oil to enter the intake manifold. This can lead to poor engine performance, excessive oil consumption, and potential engine damage if not addressed. Additionally, a faulty or improperly sealed carburetor could exacerbate the issue by failing to contain the oil. It's essential to diagnose the root cause promptly to prevent further engine problems.
The 1987 Chevy Caprice Brougham with a Rochester E4ME carburetor does not have an idle air control valve (IAC) like modern fuel-injected vehicles. Instead, it uses a mechanical throttle and idle adjustment setup. The idle speed is typically adjusted via the carburetor's idle speed screw. If you're experiencing idle issues, it would be advisable to check the carburetor settings or consider other components like the throttle linkage or vacuum leaks.
Check for FP leaks at the FP regulator and gasket (at TB unit) and possibly leaky pump.
bad seal in between your intke manifold and carburetor
oil leaks
vacuum hose leaks off the carburetor.
Sounds like it's running out of fuel. Check fuel filter, vacuum leaks, fuel pump, etc.
Hard to answer this question without more info, but check to be sure all cylinders are firing and there are no vacuum leaks. Verify the flywheel or ring gear is properly attached, and the harmonic balancer is ok.
float valve or float are bad
check for vacuum leaks
Replace the freeze plugs.... All of them. Chances are if one has rotted through, the others aren't far behind.
Does this vehicle have a carburetor or is it fuel injected? In any case start with looking for vacuum leaks.
To replace the heater core on a 1990 Chevy Caprice, begin by disconnecting the negative battery cable and draining the coolant. Remove the dashboard and any components obstructing access to the heater core, such as the center console and the climate control housing. Disconnect the heater core hoses from the engine bay, then unbolt the heater core from the housing and replace it with the new unit. Reassemble everything in reverse order, refill the coolant, and check for leaks.