1990 fuel injection engine into an 86 Z28

Those are both fuel injected. The 1992 is a multi-port injection system (one per cylinder), while the 1990 is throttle body injection- one or two injectors inside the throttle body assembly -which looks like a carburetor, but it isn't.

timing, vacuum leak, or compression in engine gone!

as it is the basic 305 block the differences may be fuel injection over carburettor which may require sensor attachments but basically the engine should just slot in place.

there is a complience plate located on the firewall which has engine #if it starts with 16 its a 1.6ltr if it starts with 18 its a 1.8ltr.also i think that if its a carby its 1.6 if its fuel injected its a 1.8ltr!! hope that helps.

I believe that all cars were required to be fuel injected by the late 1980s in the US. but the only way to be sure is to look at the engine. Is there are big cylindrical dish that looks almost like a tire sitting on the top center part of the engine? if you dont know, try and find the air intake. follow the line past the air filter. When you get to the engine, does it seem to meet with small marker shaped objects, one for each cylinder the engine has? if so, the car is fuel injected. If there is a carbeurator, the dish thing that sits on the top of the engine, the car is not fuel injected

No difference, same engine, it's either called an electronic fuel injection (EFI), or a multi fuel injection, usually MPFI ( multi port fuel injection).

These kinds of troubles should show as a fault on the engine computer. Rent your own scanner and have someone watch it while you try to drive the car. The primary thing you are looking for is whether it is a fuel or ignition problem--sudden stops point to ignition failures as fuel problems usually stumble to a stop. I'm assuming that the engine uses throttle-body fuel injection rather than direct multi-port injection. With throttle body injection, only one injector is involved, and it could cause sudden engine stoppage if the injector solenoid coil opens or loses operating signals when hot. An intermittent crankshaft position sensor or camshaft position sensor can cause these problems. I assume that the engine never exceeds the normal operating temperature. An ignition problem could involve any component of the ignition circuitry including 12 volt supply, but not the spark plugs or plug wiring.

almost every rear drive drive full size used the 305 V8, so u can get an engine from a Buick La sabre, Pontiac bonneville and firebird, also Oldsmobile 88, and don't forget Camaro. any 305 chevy V8 will bolt in, also the 350 V8 will bolt in, this is a much better choice..

hi there, is it carby or fuel injected?

CARBY - fuel pump, dies when warms up (most likely if you still have spark)-to test for spark remove a lead and stick a small screwdriver in and sit a few mm from an earth point(dont touch the metal part of the screwdriver) turn the car over you should see spark.
- needle and seat
- fuel filter (not likely)
- coil (if no spark when test)


FUEL INJECTION - i would go straight to the ecu, the 1990 is renound for having a **** ecu, they blow capacitors real easy and carry on in wierd and wonderfull ways. hope i helped.