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4 votes

How is Intake Manifold flow measured?

With modern engines, it is measured with a MAF meter, a device that meaures air flow by using a hot platina wire or film that cools down when air flows past it. The temperature is an indication of the ...
Bart's user avatar
  • 2,954
3 votes
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What is an intake heat control valve for?

It's a vacuum solenoid controlled "flap" that uses exhaust heat to keep the intake manifold warm in extreme conditions. I beleive it has a special mounting area on one of the exhaust manifolds. ...
SteveRacer's user avatar
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3 votes
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Torn metal found beneath oil filler cap, need help identifying part and severity

Update: reddit nailed the problem. I like @blacksmith37's way of thinking, but @Ben was closer. What probably happened was, back when I paid other people to do my oil changes, some underpaid ...
Joe's user avatar
  • 91
2 votes
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Precautions before changing air filter

1 clean around filter box 2 open filter box and remove old filter - dispose of it correctly 3 clean inside the filter box as necessary and fit cleaned or new filter 4 close filter box - make sure ...
Solar Mike's user avatar
  • 34.6k
2 votes

VIP future champion gas moped (carb)

Your carburettor probably looks something like this: Source This carburettor is what we call a float carburettor. Essentially, the bottom side of this carburettor works on the principle of a bowl, ...
anonymous2's user avatar
  • 5,235
2 votes
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Chevy 262 V6 Plenum - what is this port for?

I'm a dork. Its for the Vapor Canister Purge Valve, which I left hanging out of the engine bay and didn't see it while looking at connectors.
ak_'s user avatar
  • 150
2 votes

Best way to remove broken bolt from intake manifold (broke nearly flush)?

If you are going to do any drilling to get it out, use a left hand drill bit, it usually will unscrew the broken bolt. Works great.
Jeff's user avatar
  • 51
1 vote

Effects of intake valves leaking

You need to fix the issue. The biggest problem is you'll have an engine imbalance. Power output on the No 4 cyl is going to be less than what the other five are doing. This can cause excess wear on ...
Pᴀᴜʟsᴛᴇʀ2's user avatar
1 vote

Chevy 262 V6 Plenum - what is this port for?

Some ports or holes can be those used during machining to get all the others in the correct locations. Or it could be where locating studs fit. Or, if you check with the gasket, that one could ...
Solar Mike's user avatar
  • 34.6k
1 vote

Weird Corrosion on Subaru intake manifold bolt

It’s nothing to worry about probably the bolt near the crossover coolant in the intake.
Mechanic12mp's user avatar
1 vote
Accepted

Does the air intake system in a VW CC 2010 go around the engine?

The first part of your description is correct: As I understand it, the air intake is on the front right near the radiator and headlight. It feeds the air in through the air filter, then the maf ...
JPhi1618's user avatar
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1 vote

Same engine but different intake manifold design: which one should I use?

So, your real question is the bold bit at the end of your explanations: Is there any real benefit or not (from any angle: consumption, performance, etc) by installing the second manifold? Answer: no. ...
Bevan's user avatar
  • 561
1 vote

Manifold vacuum vs performance

Manifold gauge vacuum is the difference between manifold absolute pressure and barometric pressure. The reason you see 0 inHG at WOT is because manifold pressure is equalized to barometric pressure in ...
Ben's user avatar
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1 vote

Manifold vacuum vs performance

I remember that gauges were available for tuning / performance fitment : id est : boy racer / petrol head applications and the gauges came with an explanation sheet which explained the readings or ...
Solar Mike's user avatar
  • 34.6k
1 vote

How is Intake Manifold flow measured?

In labs testing engines, we used manometers (specially calibrated with constants), temperature etc and the gas equations to get mass or volume flow rates...
Solar Mike's user avatar
  • 34.6k
1 vote

What is an intake heat control valve for?

Well if it is anything like an aircraft engine it may be there to prevent intake icing. Evaporating fuel soaks up a lot of heat and ice can form in the intake even on relatively warm days. It might ...
dlu's user avatar
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1 vote

what the torque should be on my 2000 gmc 4.3 intake maanifold

I think this should help. I note that it is a very specific sequence and three-stage endeavor -- which makes me suspect that it should probably be followed:
SteveRacer's user avatar
  • 12.4k
1 vote
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How to fix an injector leaking into the manifold?

Replace it, too may things can go wrong with an injector, weak spring, pitted pintle seat, shorted solenoid winding's, etc. Its not worth the time to try cleaning it.
Moab's user avatar
  • 7,990
1 vote

How to fix an injector leaking into the manifold?

I would start by running though a tank of injector cleaner or seafoam and see if it cleans itself out. If that doesn't work, you can pull it out and try to clean it with carb cleaner and an air ...
rpmerf's user avatar
  • 8,403
1 vote

How to fix an injector leaking into the manifold?

If the engine is completely shut down, then the injector should be closed and there will not be any pressure in the system as the fuel pressure regulator and the pump would be off (although I am ...
Vish_evo's user avatar
  • 576

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