What can cause a steering wheel to shake and vibrate?
As others have said, it’s usually down to wheel alignment or balance and is usually noticeable after a tyre change if the change wasn’t properly handled. Occasionally this can also be caused by one of the weights placed on the wheel by the garage to balance it suddenly detaching (though this is rare).However, if you notice any sudden change, I’d certainly advise you to stop IMMEDIATELY and check what’s wrong.One day, a few days after a tyre change, my steering started to noticeably start wobbling badly as I was overtaking someone at 70Mph on the motorway. Due to the suddenness and violence of the wobble, I assumed one of the lead balances had suddenly come off and I decided to pull in immediately to the hard shoulder but as I was pulling in below 40 Mph, there was an almighty bang and shudder in the car and I found myself watching the left wheel of the car running away into the distance - luckily off the motorway, into a field.I managed to steer onto the hard shoulder with the car running on 3 wheels and the brake disk of the missing wheel - it turns out that the garage hadn’t tightened the nuts well enough and they came loose and out mid drive.Motorway recovery eventually retrieved the wheel for me and as the tyre garage was within a mile of the motorway (and I was quite close to that junction) they drove me there with my car on their flatbed truck. The manager of the garage went ashen when I explained what had happened but as the only damage was an almost unnoticeable large but gentle dent in the bodywork where the wheel had hit as it went off on its bid for freedom, they were able to fix it with new nuts and get me back on the road quickly.Extremely scary experience though. Modern tyre garages tend to do a final tighten with a wrench for safety if they’ve used the compressed air spanner - something that hadn’t happened in my case. I now always ensure this is done before I leave the premises.
Can 5W-40 oil harm the engine if the manual says use 10W-40?
In a nut shell: you should always use the oil viscosity recommended by the vehicle or engine manufacturer. If there are any alternative oil viscosities allowable then they will be listed in the owners manual for the vehicle or engine …and there may be caveats with regard to the range of expected daily temperatures.Will 5W40 cause any harm? Maybe. It depends on things like the general, daily ambient temperature and the design parameters of the engine itself. Typically lighter weight oils, like the 5w40, are used when the weather is cooler than say in the heat of the summer …that would be when the 10w40 would be used. Check with your owners manual.This sounds like oil for a motorbike. Most modern car engines don’t use 10w40. Small engines used in motorbikes are typically air-cooled and, to a much greater extent than water-cooled engines, they use the oil in the crankcase to also cool the engine …to draw heat from the hottest parts. In addition, motorbike engines …4-stroke motorbike engines (where you don’t mix the gas with oil) use the crankcase oil to lube the gearbox and the wet clutch used in these engines …areas that also create a heat load for the oil. If this is, in fact, oil to be used in an air-cooled engine then stick with the 10w40.
How do I turn up the idle speed on my vauxhall astra mk?
the idle control valve, controls the air/fuel mix. follow the air filter along from the black box, to the pipe with the mass air flow meter and sensor, that leads you to the throttle body. if the engine is running you can move the throttle cable connected to the body to rev it. where the cable joins the throttle body, there should be a small screw, this stops the throttle position for idle. twist this a tiny bit to keep the throttle cable from releasing too far. it should idle about 850. the total cost is...............zero. hope this helps you out
What is difference between clutch fluid and brake fluid? Can we use same fluid for both (clutch & brake) master cylinder?
Its BRAKE fluid (sorry) and its used for brakes as a hydraulic power transfer medium. When you hit the brake pedal or pull the brake lever the fluid flows through and pushes the brake piston and calipers onto the disc, thus employing braking action.Clutch fluid is actually brake fluid used for engaging cluth via hydraulic action.And yes they are both are the same i.e, brake fluid is used as clutch fluid too. Just differ in the application.
How can I distinguish between petrol cars and diesel cars?
Their are various points through which you can differentiate between a diesel and petrol engine:By name of the variant for example in case of Maruti Suzuki the variants LXI, VXI and ZXI are petrol whereas as LDI, VDI and ZDI are diesel.By the marking of the engine name, all the manufactures have a different name for their petrol and diesel engine like the petrol engine of the maruti suzuki is VVT whereas the diesel on is DDIS which is written on the front fender of every maruti car, similarly Hyundai’s petrol engine is VTVT whereas the diesel one is known as a CRDI engine.By looking under the hood.If you are inside the cockpit and the car you are in possess a tachometer then it is very easy to distinguish between the engine types by just looking at the tachometer. As the petrol engines are more rev friendly they are tuned up to go higher revs as compared to a diesel engine. A tachometer of petrol engine will go up to around 8000–11000 rpm whereas that of the diesel engine will be 6000–7000 rpm.above picture is of the petrol elite i20, whereas the picture below is of the diesel one.You can also get it done by just opening the fuel cap, it is always written on the fuel cap that which fuel to put in.
How do I fix the engine oil leakage to spark plugs?
There are three possible causes:1) rings. If the oil control rings are shot, or the cylinder bore is excessive, you'll get oil from the pan up past the piston into the combustion chamber, oiling the plugs. Diagnosis: leak-down test. If you pressurize the cylinder, and can hear air hissing into the crankcase, it's rings.Repair: complete engine rebuild, which these days just about always means "replacement".2) valve guides. If the seals on the valve guides have failed, or the valve guides have exceeded wear limit, or the valve stems have exceeded wear limit, oil may run down the valves into the combustion chamber, oiling the plugs.Diagnosis: leak-down test. If you pressurize the cylinder, and hear air hissing into the valve cover, it's valves and/or guides.Repair: valve job. Much less expensive than rebuild. But be cautious - you could be putting a lot of money into an engine with other issues. You need to establish the baseline health and remaining life of the rest of the engine before doing this (unless you do it yourself, in which case the out-of-pocket costs are low enough that it's no big deal, just annoying, if the engine fails a couple of months later)3) crack in engine. If there's a crack, causing oil to bypass the oil control measures at the piston sidewall and valves, oil will leak into the combustion chamber, oiling the plugs.Diagnosis: leak down test. No air leaking, anywhere, and you're still getting oiled plugs.Repair: replace engine. Me, personally, I'd strip it myself, just to see where it failed, but you're going to need a new block, or head, or whatever failed.
How do you know whether a car is front or a rear-wheel drive?
Come on guys; looking for a driveshaft or differential requires you to get down on the ground. Try these fun tips instead:Your owner’s manual usually says which wheels are driven. Even if it doesn’t, if you see the word “transaxle,” that means FWD. (edit: except for a small number of cases where the transmission sits between the rear wheels, like on Porsches, NSXs, and Corvettes - but if you are buying one of these, you already know you have RWD)Even without looking, odds are that your current production car is a FWD drive car, unless it is a luxury or sports car. European sport sedans (BMW, Mercedes, Jaguar) are generally RWD, as are Cadillac sedans, Corvettes, Camaros, and Dodge Challenger/Chargers. Some Infinitis and Lexuses are RWD. No Volkswagens or Audis are RWD (save the R8). Volvos are FWD, as were Saabs. Pretty much all Hondas/Acuras (aside from the NS-X), Nissans, Peugeots, SEATs, FIATs, and Citroens are FWD.If your engine is smaller than 2L, it’s pretty much guaranteed that you have a FWD drive car. It’s only been very recently that RWD cars in the U.S. have had engines even as small as 2L, and even then, it’s been with a high-pressure turbo (Cadillac ATS; Jaguar XE and XF).You can usually tell by looking at the direction the engine runs in the engine compartment. FWD cars generally have the long axis of the engine running from front wheel to front wheel (“transverse”). That’s because the transmission is essentially under the engine. RWD have the long side of the engine running front to back.RWD cars generally have a transmission/driveshaft tunnel running from the front to the back of the car, which creates a “hump” between the left and right rear seats. FWD cars sometimes have a smaller hump (for structural reasons, not for a driveshaft), but it’s nowhere near the size.If you need snow tires, you might have a RWD car.If your wheels are aligned and the car pulls to the right or left when you accelerate, it’s likely a FWD car.If you see them towing your car with the front wheels up, it’s a FWD car.If the car has a whale-tail spoiler, and its nameplate is Civic, then you have a FWD car - and you might be fronting, since downforce in the back is meaningless to FWD.