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Valve clearance d379b

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What is the valve clearance of nissan caravan


Valve lash is the end of the rocker arm and the valve stem clearance between. When the engine is running, due to the thermal expansion and contraction, if there is no gap between the rocker arm and the valve stem, rocker arm swells, the top valve open, the impact of engine power and economy. Engine valve clearance will be different, usually when the car is cold, the intake valve 0.08-0.10MM, clearance exhaust valves 0.10-0.12MM Car Diagnostic Tool

Aug 26, 2016 | Nissan Cars & Trucks

3 Answers

Why does my 8hp Honda keep braking rocker arms


stuck valves are the main cause of breakig rocker arms

Sep 22, 2014 | Honda 8 HP Engine

1 Answer

Torque settingsfor head on lister petter mini6 engine


I have just rebuilt one for our Westerly 21. This is from my Petter 'A' range workshop manual:-
The water cooled engines (AC1W etc.) are:cylinder head nuts: 30NM (22 lbft) except 32.5NM (24 lbft) for the one that also holds the rocker.
Valve clearances are 0.1mm (0.004") COLDReset valve clearance after one hours running since torquing the head.
Retorque head and set valve clearance after initial 20 hours running
I believe Mini-6 refers to the water cooled engines but just in case, the air cooled engines are 27N (20 lbft)

Mar 27, 2012 | Cars & Trucks

2 Answers

Valve clearance 4g13


make the engine runs for about 30minutes before adjusting the valves,
valve clearances:
intake valve = 0.20mm(0.008 in)
exhaust valve = 0.25mm(0.010 in)
for reference only when the engine is cold,
valve clearances:
intake valve = 0.25mm(0.010 in)
exhaust valve = 0.30mm(0.012 in)
engine specs: mitsubishi 4g13 1.3L (if you have same engine)

Feb 29, 2012 | Mitsubishi Cars & Trucks

2 Answers

I have problem with my engine 4K toyota. It heard an engine noise during idling, for my little knowledge in engine repair, can you give me any procedure mannuals in adjusting engine valves for my...


Valve Clearance Valve clearance is there to allow the valves to cool in between combustion events (spark), and to make sure the valve closes properly and contains the combustion explosion. You need to cool the valves a little bit, the exhaust valve moreso than the inlet, as it's what sees the most heat as spent burnt gases go past it into the exhaust port. Run too little clearance and you'll cause the valve to "weld" a little bit to its' seat every time it closes, and then take seat metal off again when it opens. Do this enough times and you burn out the valve seat and need the head reconditioned. However, by running less clearance, the valve stays open for that little but longer, and you get more air in and out of the motor, and make more power. Run too much clearance and your motor just sounds like a diesel and loses power and tappet rattle annoys you while you're driving, so it's better to err on the side of caution.
The stock valve clearance (0.008" inlet / 0.012" exhaust, warm) is pretty good for any of the cams I've listed above, they're well-sized street cams, not really wild top heavy race cams that require super high compression to work, so don't be afraid to close the valves up a bit from the suggestions of the cam grinder, which will usually say between 0.010" and 0.014". There are a few ways to set your valve clearances:
Yellow Book Method This is from the factory 3K/4K/5K engine manual, aka The Yellow Books. It's the quick and lazy method.
Set engine to #1 TDC. Crank pulley timing mark should be on 0, distributor rotor should be pointing towards spark plug 1 or 2. Set tappets (counting from the front) 1, 2, 3 and 5. Rotate engine 360 degrees, crank pulley to 0 again, distributor rotor turned 180 degrees. Set tappets 4, 6, 7 and 8.
Nine Method I've never really gotten into doing this, takes too much time and maths for my liking :P Rotate the engine through its' range of movement, as one valve is "on the rock" of its' max lift, subtract the valve number from 9 and that's the tappet you should be setting. For example, if #8 valve is open, set clearance on valve #1. If valve #7 is open, set clearance on #2. And so on.
Stewart uses this method, and rotates the camshaft through its entire base circle and sets the clearance at the highest point. Which is a pretty good idea, as it compensates for the possibility that the base circle has been ground unevenly, and allows you to run the proper valve clearance that you want to run, instead of something that may be a few thou larger in reality.

Feb 10, 2011 | Toyota Corolla Cars & Trucks

3 Answers

Valve clearance 4hj1 isuzu engine


This is the specs for the 4H Diesel engine:
Intake valves clearance cold 0.4mm(.016inches)
Exhaust valve clearance cold 0.4mm(.016inches)

Jan 28, 2011 | 1995 Isuzu Pickup

1 Answer

Have a 20hp vanguard on a go-devil long tail motor. engin runs at idle speed then when i put the propeller into the water it stalls. if i pull the choke and give full throttle it will run some and backfire


These engines seem to have problems maintaining the correct valve lash settings. try taking the valve covers off and checking the valve/pushrod clearance.on tdc compression stroke it should be .001-.003 clearance. then check exhaust stroke tdc on exhaust stroke. clearance should be same on the other valve then. hope this cures your problem.

Dec 22, 2009 | Briggs & Stratton Briggs Stratton Intek V...

1 Answer

Valves "Unadjustable" 2004 Dl-650


If the valves were bent, the engine wouldn't run worth a darn, if at all. What I suspect is that the exhaust valves have sank their way into their seats and are now positioned too far upward in the cylinder head to attain adequate tappet clearance. Exhaust valves have more of a tendency to do this because of their high thermal loading during operation. Then, as the engine continues to be operated - and the tappet clearance diminishes, the valves run even hotter, causing damage to the valve and seat ares.
So, to answer your question; yes, the previous owner did neglect it - by failing to keep the valve tappet clearances set correctly.
The only cure for this, sadly, would be to remove the head and replace the exhaust valves and recondition the cylinder head's valve seats. Of course it may turn out that the cylinder head valve seats are worn beyond repair, requiring a new cylinder head.

Nov 01, 2009 | 2004 Suzuki DL 650 V-Strom

1 Answer

Want to know what the valve clearances are for my 1999 hyndai excel


Adjust the jet valve clearance before the adjustment of the
intake valve clearance.
Jet valve clearance (hot engine)
[Standard value]. . . . . . . . . . . . . . . . . . . 0.25 mm (0.010 in.)

now adjust valve clearance
Valve clearance (hot engine) [Standard value]
Intake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.15 mm (0.006 in.)
Exhaust. . . . . . . . . . . . . . . . . . . . . . . . . . 0.25 mm (0.010 in.)

Jul 30, 2009 | 1990 Hyundai Excel

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