No, normally the engine will idle very rough and then run good at full throttle when the intake gasket is leaking. Spray around the edge of the intake with carburetor cleaner, engine running. When you hit the spot with the leak the engine will rev up. A click can be valve train noise caused by a valve that needs adjusting or a sticking lifter. A knock is usually caused by worn bearings.
Click this link or paste it into your browser. The answer is here. http://www.f150online.com/forums/engine/152892-lower-intake-manifold-torque-specs.html
If you mean PO660 it is Intake Manifold Tuning Valve circuit Malfunction. Click the link.
It's bolted on the lower part of the engine block, close to the oil pan. Also close to where the transmission/transaxle is bolted to the engine block. Rear side of the engine (same side as the intake manifold). You have to push and hear the click before disconnecting the connector.
Look for a cracked, broken, or disconnected vacuum hose coming from the intake manifold. Also make sure the intake tube going to the air cleaner does not have any holes letting air in. Click the link.
Yes, the purge valve on a 1999 Grand Prix with a 3.8-liter engine is designed to click on and off while the engine runs. This clicking sound indicates that the valve is functioning properly, allowing fuel vapors from the charcoal canister to be drawn into the intake manifold. If the valve is not clicking or remains constantly open or closed, it may indicate a malfunction that should be investigated.
All cylinders are moving at the same time weather it is on the intake or exhaust stage. The valves close and open in cycles. Click the link to learn more.
Click and Clack just answered a question like this on their radio show. Although the question was somewhat different, I think the answer may be the same. Have a mechanic check your engine gaskets to see if antifreeze is leaking into the engine.
I FOUND THIS AT WWW.AUTOZONE.COM, CLICK ON VEHICLE SPECS . For your 1999 CHEVROLET TRUCK BLAZER 2WD: INTAKE BOLT TORQUE FOOT POUNDS (FINAL TORQUE) TORQUE LOWER MANIFOLD BOLTS TO 27 IN/LBS TORQUE LOWER BOLTS TO 9 FT/LBS TORQUE LOWER BOLTS TO 11 FT/LBS TORQUE UPPER MANIFOLD BOLTS TO 44 IN/LBS TORQUE UPPER MANIFOLD BOLTS TO 7 FT/LBS (TO TORQUE BOLTS & NUTS, START IN CENTER USING CRISSCROSS PATTERN)
Click the link.
Go to www.autozone.com (might be .ca) In upper left corner, click on repair guides. Select your make model and year. Vehicle selections are on the right, (engine, electrical, etc.) This site is seriously what mechanics use to fix your car...and they bill you$90/hr to surf the web.
A petrol (gasoline) engine can be an otto cycle engine or it may not be. Click the link.
Go to kiatechinfo.com register as owner, select year and model, click service manual, click engine, click engine mechanical system, cilck timing system, click timing belt, click repair installation/removal, click installation,done!