Hot answers tagged

14

Since diesel engines rely on compression to run and not a spark like a gasoline engine, heat is directly involved in the combustion of the diesel in the combustion chamber. The way this occurs is that when the piston comes up it compresses the air which is in the cylinder. This creates heat. When the engine is cold, a lot of this heat gets transferred out of ...


13

I would imagine that this sort of technology would lead to increased wear on your starter motor, as it is being used far more than it would normally be, however I would hope that they would have anticipated this and designed the starter to be more robust than a traditional one. The battery should be able to cope with it fine all the time it is in good ...


12

Some things to check in order of likelihood- Check the battery connections are tight. A loose connection may prevent your car from starting, even when the lights, radio, etc., may seem to be working fine. The battery may not be fine. Lights are not high load,so having the lights work is not an indicator of how healthy your battery is Starter motor. ...


12

tl dr: Corrosion (once cleaned) is not a huge issue. It is just typical corrosion on the battery terminal. See this image: (NOTE: This is a 6V battery, but the same principles apply.) The blueish color you see is hydrated copper sulfate. When acid vapors escape from the battery, it can cause a reaction with any copper which may be in the terminal. The ...


11

Air Conditioners are run by a belt that is connected to the crankshaft. The engine turning causes the A/C Compressor to move. When your A/C is not turned on, a clutch disengages the A/C Compressor's internals from the pulley on the belt. This allows that belt to free spin, not adding load onto the engine. When the A/C is turned on, that clutch is engaged ...


11

Turn the key in the ignition to 'On' Hold the clutch lever Engage first or second gear Let the motorcycle gain speed (either go downhill or push start) Let go of the clutch lever. The motorcycle should sputter to life


10

Potential savings from reduced idling should greatly outweigh any increased wear and tear on starting and charging systems. I answered similar question about idling before (Is idling bad for your engine?). To summarise the negative effects of idling: Fuel combustion is incomplete, which leads to contamination of combustion chamber (glazing), spark plugs (...


10

From personal experience, I'd replaced ALOT of these working at the dealership. It wasn't just the accords either, it was quite a few Honda and Acuras that used the same design and power delivery system. The most common issues I saw out of probably close to 100+ failures of these was: Ground strap on the starter becoming corroded. Bad ground to engine ...


9

You've almost certainly got a poor connection on your starter motor solenoid. Find the starter, and there will be a small cylinder on one side of it, with a single small wire going to it (not the big main starter cable). Remove this (it is usually a spade connector) and clean the connectors - if necessary squeeze the female connector on the end of the wire ...


9

I'll take a slightly different stance here - having a vehicle stand for a year or a little longer than that isn't that long, so I'd try to get it running first before I start changing out parts. Here's what I'd do: Drain the carbs if it's not FI. Chances are that the fuel has evaporated and left some residue. If you didn't drain the carbs it might be ...


9

This sounds like a problem with the coolant temperature sensor. Don't worry - replacement is cheap and can be done easily by yourself or a friend who worked on cars before. Cause Cold engines need more fuel to start than warm engines. This is due to the fact that a part of the vaporized fuel condenses at the cold cylinder wall inside each cylinder. This ...


8

We have a Mk4 TDI Jetta that makes a sound after startup that might be described as a sneeze. I'm fairly confident that it's the starter motor's overrun clutch. As soon as the engine "starts," it begins turning faster than the starter can turn. For this reason, starters have a one-way clutch, called an overrun or sprag clutch. This permits the starter to ...


8

Repeated clicking is a result of not enough power making it to the starter. Your battery either has a bad connection, or is too weak to turn the starter motor. Battery Connection Your problem may be entirely due to a bad connection. Starters draw a lot of amps, and batteries are weaker in cold temperatures. I'd start by fully exposing the terminals. You ...


8

Something to keep in mind is that the time an engine takes a great deal of its wear is cold starts. The oil isn't up to temperature yet, so parts are not separated as they should be and you get more wear. If you do this very frequently, like going from red light to red light, you're probably doing more harm than good. Also, if your car does not start as ...


7

A good place to start looking is the fuel filter, particularly if you didn't put fuel stabilizer in the tank before putting the bike in storage. You can test to see if it's clogged by blowing on the line-in, but if you don't like gas on your lips fuel filters are cheap, and replacing them regularly is a good idea anyway.


7

To expand on xpda's answer, and genericise it for any engine that has been standing for some time: Drain and replace the fuel - modern unleaded goes off after a couple of months so won't be any good if it has been standing for longer than that. Replace/clean the fuel filter. Drain and refill the oil. If it has been standing for a long time it would be ...


7

I've a 93 and have had what sounds like the same problem, that is the ignition turns on but when the key is turned further to start the engine it does not always crank the engine. In my case it was the ignition switch and being one not to through money away I took it all apart and cleaned the switch contacts and it's been fine for the past four/five years. ...


6

If the voltage was 10.5V that means the battery was completely empty, 0%. You should never let your battery go that low, several such discharges damage it irreversibly. I assume it is a lead-acid battery? Best never let it go below 12V (I mean voltage measured after the battery has been at rest - not powering anything, nor charged - for a few hours). If you ...


6

You might be interested in this question: What are the audible symptoms of a failing starter motor? The diagnosis in that question and answer period was that I probably had an aging starter motor (correct).


6

If you really want a no-install option, and even @paulster2 answer seems like work then why not use old school locks like gear/steering locks? Or better, this -


6

It could also be the Crank Position Sensor. It is mounted on the flywheel cover and if it gets contaminated with dust from the clutch it can stop the engine from starting. It confuses the average guy as it looks like either a fuel or ignition problem. It is held in position with two bolts. Might be awkward to get to. Hope this helps.


6

Your problem is caused by decompression valve problem in 650 engines prior June 2012. Only way to get rid of it permanently is to replace decompression valve, which fortunately is not a huge job. BMW bulletin about the issue: http://www.gravesurrounds.com/bike/hotstart.pdf Chances of having hot start problems due decompression valve are higher when your ...


6

This is called "run on" of the starter. It doesn't cause a huge issue if it doesn't happen too much or for too long, but basically the Bendix stays engaged in the flywheel ring gear an is being then driven by the engine. To further explain, the Bendix (or pinion drive mechanism) is the part on the end of the starter armature which engages the flywheel (or ...


6

Two things about this bike if it is OEM It has two sets of coils. It has two sets of points. If you take the right side cover off the motor where the crank is, you can see if the points have been swapped out with signal generators, a common mod for this bike. One coil fires for cylinder 1 and 4, the other fires for cylinder 2 and 3. IMO you have a bad ...


6

This could be caused by multiple things, the most likely case would be a bad battery in need of replacement. However before coming to that conclusion there are a few things which can be checked. Make sure your battery terminals are in good working order and are not grounding out any where make sure they are insulated and not cracked and touching metal. ...


6

I recommend you carry out the following steps: Have the starter relay tested. From the description provided (old starter was clicking) this may actually be fine but it is so easy to verify that it works it would be silly to not rule this out as the source of the problem. After locating the starter relay, have someone turn the key in the ignition to start ...


6

It sounds like your clutch master cylinder is initially letting fluid past the piston seals. Pumping the clutch pedal sounds like it gets the piston sealing again so that the clutch starts to work. I am presuming that the clutch and brake both share the same reservoir and that you are not loosing fluid and not having to keep filling it up. Is that correct? ...


6

Voltage drop the ground side pin 4 with the car running. I'd suspect a poor ground is the cause. You can also scope the power side by removing the fuse and putting a wire loop in place. Connect a low amp probe. Since the fuse is rated @ 20A you should expect to see 8-10A if it's drawing more amps than that suspect a short to ground or a bad ground or ...


6

I'd suspect that it is causing extra wear on the starter motor and flywheel (where the starter motor engages). Considering the start isn't in motion at any point other than starting the car, and there's no contact between it and the flywheel unless you are running the starter, you are causing more wear. Depending on the cost of replacing those parts, it ...


6

Your carbs are clogged with varnish and bad gas The remnants of gas that has evaporated are a gummy hard varnish inside of your carburetors. You have a bit of work to do. You need to completely disassemble the carburetors and thoroughly clean all of the nooks, crannies, jets, fuel galley's and air galley's in order to get your bike back in working order. ...



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