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If it has the bi-metal spring actuated valve it has a donut. If it has a vacuum operated valve it has no donut.
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∙ 11y ago
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1993 Chevy heat gauge want work?
1993 chevy 4.3 v6 1500 truck temp gauge inoperative,
What is the purpose of the blocked holes in the intake manifold gasket on a 1990 Chevy 350?
Sounds like you might be talking about the heat riser passages that provide heat for the automatic choke (if equipped). Not needed for carbs with manual choke or heat stove-type pulloffs.
What would cause a constant very loud tapping or knocking noise in a Chevy 350 engine that does not blow smoke or leak oil and seems to still run good.?
Check operation of exhaust "heat riser" valve. Also check exhaust header gasket for leaks. Heat riser should be near the exhaust header, in exhaust pipe connection.
What happens when a Chevy truck's heater doesn't put out heat?
You'll probably be colder than normal.
Will a1990 Chevy tbi 350 intake manifold fit on a 1979 Chevy 350?
yes make sure the exhuast heat riser passages in the heads that go through the intake have the gasket insert the same way as the tbi setup. why would you want the tbi ?
What is a heat riser?
A heat riser is a duct that allows heat to rise up from the exhaust manifold. It's purpose is to warm the air being brought into the intake manifold preventing the freezing of moisture, that might otherwise cause the engine to stop running or run properly.
Why does your Chevy truck only blows heat when the truck is moving?
The heater core is stoped up / MAYBE. Are the engine is low on coolant, Check coolant level in radiator.
Is there another name for a cold start valve on a 85 Nissan 300zx?
* A heat riser valve
How do you change a universal joint on a 2001 Chevy truck?
heat the cap up with a turbo torch and burn the plastic out of the cap groove.
What is donut sex?
Its When You Get A Warm Donut And Screw The Sprinkles Off It Don't Let It Cool Down Heat It For 1 Min And Have Fun After Eat It
Can you use heat to repair Chevy 2500 truck frame?
yes However, it is not recommended .. so the damage needs to be in front of the shock mounts .. and only heat to a soft red color
What cause your 1988 Chevy truck not to blow heat at all replaced heater core and blen door actuator?
Have you checked your suction lines.
