1987 or 1988 350 v8 Sat for atleast 4 years. 4x4 1 ton Throttle Body injection
Check all fuel lines for leaks, make sure it doesn't have bad gas in it. Listen for fuel pump when key is turned on. Change fuel filter. See if that's helps.
I’m happy to assist further over the phone at https://www.6ya.com/expert/kim_3202917d7c587455
SOURCE: Chevy 454 back fire
Ignition timing is set by the computer as long as the distributor pickup point is within reason.
It could be running too lean. One of the TBI injectors may be sticking or not working (wiring or computer problem), or fuel pressure could be low.
SOURCE: 1987 Chevy R10 project truck won't start
check the float on the carb is stuck shut not letting fuel in
SOURCE: k2500 chevy 3/4 ton pick up. no power under load
IN your distributer under the rotor is a magnet and a pickup coil (the magnet is known as a pole piece) check your pickup coil for corrsion (green in color) and the module and also check pole piece for cracks in the magnet where the rivets hold it together. sometimes oil wicks up around the distributer shaft because of housing wear or the pieces just wear out over time.
SOURCE: 1990 chevy blazer 350 ci throttle body fuel
Sounds like you have an injector leaking. Have someone just cycle the key on and off to run the fuel pump but don't crank the engine. If you see fuel dripping from the injectors, unbolt the injector cover on the throttle body, remove the injectors and replace the orings around the injectors.
SOURCE: need a vacuum hose diagram
hi you haven't given much information on what you require, on what vacuum system you require and is it for a v8? v6? straight 4? but i have put on here a link to all the vacuum diagrams for these and more hope this helps please rate and comment thanks
http://www.compnine.com/index.php?t=1&year=1988&majorgroup=03&supplgroup=NULL&catcode=52C&modelcode=C&makecode=LC&grouptype=B&modelid=6549&uid=1
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