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Peter Bagley
Peter Bagley, Toyota mastertech
Category: Chevy
Satisfied Customers: 681
Experience:  master tech at Toyota dealer
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My 89 C1500 350 usually starts first try. Maybe once per

Customer Question

My 89 C1500 350 usually starts first try. Maybe once per week, it won't. At these times it will crank very well, and I may get a little smoke (uncombusted gas), so the issue seems to be spark, not fuel. Within the last year I've had a new distributor, cap/rotor, plugs, wires, ignition coil and ignition switch. Could my issue be a crank sensor?
JA: Does the vehicle stall at low speeds? Does it sputter?
Customer: It hasn't stalled while driving yet. It will occasionally "dim", then rev back up. This can be accompanied by a lurch/clunk if I'm stopped at a light.
JA: What is the model of your '89 Chevy?
Customer: Silverado C1500,*****
JA: Are you fixing your Silverado yourself? What have you tried so far?
Customer: I often will, but the above fixes have been done in a garage.
JA: Anything else you want the mechanic to know before I connect you?
Customer: Only that it's been difficult for my mechanic to diagnose the issue, as it doesn't often "fail". At least not while it's in the shop.
Submitted: 8 months ago.
Category: Chevy
Expert:  Peter Bagley replied 8 months ago.

Hello and welcome to just answer.i value your input to my questions so I may help you better. Could you tell me what color smoke comes out when it starts hard. Do you notice any coolant getting lower in the reservoir?