Question about Mazda Cars & Trucks

1 Answer

If a valve does not close completely will that keep engine from starting

Posted by on

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Mazda Master
  • 1,975 Answers

It would really depend on the amount of cylinders you have and how far it stays open. Say it's a 4 cylinder engine with the valve staying open quite a bit. That WOULD cause you to lose a lot of compression. If you have say a 6 or 8 cylunder, you may have a poor running and missing engine but the compression would most likely be made up with the other cylinders. This isn't a for sure thing as different engines require different amounts of compression in order to run but hoping you get the concept of what I am trying to say. Hope this helps....

Posted on Nov 01, 2012

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

2 Answers

Installed new piston rings and gas is getting inside oil


valve not closing is from a bent valve. Black soot is from over fuelling and incomplete combustion. Oily chamber is oil from the rings. It si possible that more than one valve is bent as it occurs from turning the engine over without letting of the rockers when adjusting the valve timing.

Nov 14, 2014 | 2001 Hyundai Accent

1 Answer

What is mean by thermostate valve


The thermostat is a critical part of your coolant system, the system that circulates water and antifreeze (coolant) through the engine to keep it from over-heating. It is called a valve because it can open and close, depending on how hot the coolant is acting upon it.
The reason to put a thermostat in the coolant system is to allow the engine to reach normal operating temperature quicker (and therefore operate at peak efficiency) than without a thermostat.
When the engine is cold, the coolant is at normal outside temperature, so the thermostat is closed. This means when you start the car, the coolant starts circulating through the engine, but can't flow into the radiator. With a closed thermostat, the coolant just keeps circulating around in the engine until the car warms up, the coolant gets hot, and the heat acts upon the thermostat, causing it to open at a certain temperature (about 185-195 degrees F.), With the thermostat now open, the coolant can now enter the upper radiatior hose and flow down the radiator to cool itself down, before going back into the engine through the lower radiator hose.
So the thermostat is always found on a car in the area where the upper radiator hose connects to the engine. Thermostat closed-water can't circulate through the radiator. Thermostat open- coolant is forced through the hose into the radiator.
I hope this helps you understand the thermostat valve and why all manufacturers include them.

May 27, 2012 | 2011 Fiat Punto Evo

1 Answer

96 sonoma running too rich with p1406 code


P1406 EGR Valve Pintle Position Circuit Fault
This code is usually caused by carbon buildup in the EGR valve. The carbon deposits prevent the valve from closing completely.

After removing the EGR valve, clean the pintle seat area of the valve and the corresponding passageway in the engine.

or simply replace the EGR valve.

Hope this helps!

Mar 07, 2012 | 1996 GMC Sonoma

1 Answer

I need to know how to go about the second procedure for valve clearance on my 1.5l mitsubishi lancer. ive started on TDC AND COMPLETED THE FIRST STEP BUT LEADING ON TO THE SECOND STEP IS TROUBLE?????? HELP


the easiest way is to start at the first valve,first you need to know if the inlet & exhaust valves have the same clearance, starting from the left side of the engine ( standing at the front ) the first valve exhaust, the next two are inlet, the next two are exhaust, the next two are inlet & the last one is exhaust, what you do is turn the engine over by hand ( this might be easier if you remove the spark plugs ) until the valve opens & closes, after it closes turn the engine a little more & adjust the clearance on that valve, repeat this action on every valve until they have all been adjusted.......hope this helps......cheers.

Sep 03, 2011 | Mitsubishi Lancer Cars & Trucks

2 Answers

I HAVE A 2001 CHEVY CAVALIER 84,675.00MILES . THE CHECK ENGINE LIGHT KEEPS COMING ON AND HAS BEEN CHECKED BY A MECHANIC SEVERAL TIMES. I REPLACED THE GAS CAP. THE CODES KEEP COMING UP A READING OF P4400. ...


P0440 is a large evap leak, so it should be pretty obviuos. first check if the vent valve is closing. then check when the purge valve is closed that its not leaking. He needs to COMMAND the vent valve closed and then smoke it. He should be able to command purge and close the vent valve, then turn off the purge and watch the vacuum level to know if its fixed or not.

Sep 02, 2011 | Chevrolet Cavalier Cars & Trucks

2 Answers

Does valves have to be closed when engine is at tdc on 2002 mitsubishi eclipse 2.4


The valves for any given cylinder will be closed when that particular cylinder is at TDC and on the "firing" cycle. Since 4 cycle engines have four "cycles" the piston can be at TDC twice. Once for firing and once when the exhaust cycle is completed and the intake cycle is starting.

Cycle 1: Intake valve is open and piston is travelling DOWN. (Intake)
Cycle 2: Both valves are closed and the piston is travelling UP (compression)
Cycle 3: Fuel has been ignited and the piston is travelling DOWN ( power)
Cycle 4: Exhaust valve is open and the piston is travelling UP (exhaust)

TDC is Top Dead Center, or the point that the piston is at the top of it's travel.

Jun 11, 2011 | Mitsubishi Eclipse Cars & Trucks

1 Answer

When warm it idles rough and is hard to start


When the engine is cold, turn the key 2-3 time w/o starting the engine. What you do there is injecting fuel through the starting valve to get started. Normally this is performed by the remaining pressure in the system. Then turn another time and start the engine. If it starts easy then the fuel pump, which has a valve preventing back-flow, is the problem. However if this is the case the car should start quite ok after a stop shorter than say 10-20 minutes.
In case this wont be it, then it could be a problem with the cold start valve, which is a electrically activated valve. The problem might be that this valve does not close completely and leaks extra fuel in the intakes which than would influence the idle. You wont feel it driving, other than good pickup and lower gas mileage.

May 18, 2011 | Oldsmobile Silhouette Cars & Trucks

1 Answer

My 2004 Grand Prix GTP starts right away when cold, but once it's warmed up it's hard starting. It will just crank and crank until you give it some gas. What is wrong and how can I fix this problem?...


The usual cause for this problem is the IAC valve. It gets carbon buildup on it that becomes sticky when it is hot, such as after reaching normal operating temperature.

Carefully remove the valve from the throttle body, paying close attention to where the rubber o-ring is...it may come out with the valve or it may stay seated to the valve mounting hole. Either way...don't lose it.

On the valve is the pintle that sits in the throttle body air path, allowing or restricting air intake when your foot is off the pedal...if it is stuck, then pushing the pedal is the only other way your engine can get air.
Use a tooth brush and brake cleaner or throttle body cleaner on the IAC valve and inside it's mounting hole. Carbon buildup in this area is completely normal, however, running premium fuel and keeping a clean air filter will help the engine keep the right air to fuel mixture and minimize the problem...and save your starter too.

Aug 27, 2010 | 2004 Pontiac Grand Prix

1 Answer

Cooling system is air bound, how can I bleed it out?


Look for bleeder valves somewhere on the top of the cooling system. If you see any use them to remove trapped air. Start the engine and slowly turn the screw to remove trapped air. If there are no bleeder screws then remove the radiator cap from a cool engine. Make sure the radiator is full. Start the engine and watch for escaping air bubbles. Keep the radiator full at all times. When the engine reaches close to full operating temperature and you see no more air bubbles escaping put the cap back on. You may have to do this one more time if you experience any more trapped air in the system. Just make sure to look closely for bleeder valves. They will look like tire valves with a cap.

Jan 10, 2010 | Chevrolet Silverado 2500 Cars & Trucks

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

54 people viewed this question

Ask a Question

Usually answered in minutes!

Top Mazda Experts

yadayada
yadayada

Level 3 Expert

76164 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22156 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

8273 Answers

Are you a Mazda Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...