Question about 1998 Yamaha YZF-R1

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Metal shards coming out of the exhaust and runs on only 3 cylinders

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Hi, Anonymous not good stop riding ! for this situation I would call my local dealer or reputable shop's service/parts department and inquire about any possible quick fix, answers, or parts inquiry. If necessary, transport your bike to the dealer or shop and have a professional technician take it for a test drive, if it is in running condition, and give you a written estimate of repairs and answer any specific questions you may have about your problem. For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.
1998 1999 Yamaha YZF R1 Service Manual R1 Moto Data Project
OEM parts for Yamaha

Posted on Aug 18, 2016


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Posted on Jan 02, 2017


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There is a loud slapping (metal too metal) noise coming from the driver side # 3 or 4 cylinder as soon as you start the vehicle. The more you press the gas peddle the faster the sound

Could be stuck, and now bent from the contact with the piston. This could get expensive. Does the engine run ok other than the noise or is it missing - if the valve is stuck open it should be running rough from the misfire on that cylinder.

Sep 28, 2014 | 2003 Hyundai Tiburon

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Have a 2001 ford expedition with a 5.4 triton has a misfire in the number 3 cylinder i changed the spark plug and the coil pack on it confused on what it could be that keeps throwing these codes

Vehicles: Any vehicle with the above symptoms.

You have a bad spark plug wire on #3, or possibly a clogged/malfunctioning fuel injector on Cylinder #3. Or, less likely, some of the other possible culprits mentioned below (exhaust valve/O2 sensor/Catalytic converter/ECC).

I'm presuming the OBD-II DTC code from the Expedition's computer is P0303.
Always try resetting the code and see if it returns - your new spark plug and new coil pack may have fixed the problem, but if the P0303 code isn't reset, it'll remain stored,and the CEL (Check Engine Light) will remain lit.

If I were standing in front of the vehicle right now, the 1st thing I'd do is put my "mechanic's stethoscope" on the fuel injector with the motor running to verify correct operation. Why would I do this first? Its free, and informative. You'll hear both the explosion in the cylinder, and the "tic" sound of the fuel injector solenoid as the injector operates. Auscultate the properly functioning cylinders first, so you know what to listen for.

If all you have is a medical/Sprague-Rappaport stethoscope. remove the auscultation bell, and replace it with a 12-inch (36 cm) long wooden dowel or solid/hollow metal rod as a substitute. Sound will transmit just fine through the wood/metal. Prefer metal, if you have a choice.

Here's the "official" P0303 write-up:
P0303 Code - Cylinder #3 Misfire
Technical Description

Cylinder #3 Misfire Detected

A P0303 code means that the the car's computer has detected that one of the engine's cylinders is not firing properly. In this case it's cylinder #3.
Symptoms may include:

the engine may be harder to start
the engine may stumble / stumble, and/or hesitate
other symptoms may also be present


A code P0303 may mean that one or more of the following has happened:

Faulty spark plug or wire
Faulty coil (pack)
Faulty oxygen sensor(s)
Faulty fuel injector
Burned exhaust valve
Faulty catalytic converter(s)
Running out of fuel
Poor compression
Defective computer (ECC)

Possible Solutions

If there are no symptoms, the simplest thing to do is to reset the code and see if it comes back.

If there are symptoms such as the engine is stumbling or hesitating, check all wiring and connectors that lead to the cylinders (i.e. spark plugs). Depending on how long the ignition components have been in the car, it may be a good idea to replace them as part of your regular maintenance schedule. I would suggest spark plugs, spark plug wires, distributor cap, and rotor (if applicable). Otherwise, check the coils (a.k.a. coil packs). In some cases, the catalytic converter has gone bad. If you smell rotten eggs in the exhaust, your cat converter needs to be replaced. In other cases the problems were faulty fuel injectors.

Dec 07, 2011 | 2001 Ford Expedition

2 Answers

Check engine code p303 what is the problem with it ,2007 nissan quest van

Cylinder number 3 has to be inspected.The code p303 is indicating to check cylinder number 3.------ The cylinder can be dirty or the coil to cylinder number 3 is getting short.If the coil checks ok, then replace cylinder number 3 and that should solve the problem.------ But if cylinder number 3 is already replaced and problem is still there and you notice misfire then other possibilities for the same p303 problem is Faulty Spark Plugs, Faulty Spark Plug Wires, Coil Pack, Fuel Injector, the distributor cap, rotor, plugs and wires.This all possibilities are to be checked and inspected. First you should remove the #3 spark plug and check it for fouling. If it is fouled, then you know it is part of the problem, but you don't know it is the problem. Next inspect the wire for carbon tracking, tears in the insulation, corrosion on the metal contacts or discoloration. Also check the resistance in the wire and make sure it is not too high. Remove the distributor cap and check inside for burns, cracks, carbon tracking and corrosion on the cap and rotor. Inspect the rotor button (metal contact) for wear as well and make sure the contacts inside the cap are in good condition. If you have done this in the past 30K it is unlikely unless your cap has a water leak or the wire has been installed but not run through the holders or damaged, but if it has not been serviced in a long time, spark is likely your problem. An injector check is more difficult. You can use a noid light to check injector pulse (make sure the wiring is working properly), but you may need to take it to a shop to check injector flow unless you have this equipment at home. -------------
Other test---- You can get a compression tester or take it to a shop for this step. Remove the spark plugs and check the dry compression on each cylinder. If you notice a drop of more than 20% on cylinder 3 you've found your problem. Then you should do a wet compression test (add a SMALL amount of oil to cyl 3 and check the compression again). If the compression improves, the problem is the piston rings and if it does not it is likely in the valve train. Here's another part where you can get stuck without expensive equipment - unless you want to tear into your engine, if the wet and dry compression checks are bad you will need to do a leak down test by pumping air into the cylinder on the compression stroke (valves closed and piston at the top of its stroke) and determining where it leaks out. If it comes out the intake, it is an intake valve problem, if it comes out the exhaust it is and exhaust valve problem, if it goes into the crankcase, it is a block problem and otherwise it is a warped/cracked head or head gasket problem. The head gasket is a very involved repair, but there are a lot of people that can do it themselves by sending the head to a machine shop to be inspected and installing a new head gasket and head bolts if the head passes inspection or can be machined. Most machine shops will do any valve train repairs you need as well. A block problem condemns the engine.--------------- But most probably the problem in this p303 is faulty cylinder and spark plugs.-------- But in some cases the problem remain even after replacing this cylinder and spark plugs, on that cases this further troubleshooting has to be done.---------------
This will help.Thanks.Helpmech.

Jul 16, 2011 | Nissan Quest Cars & Trucks

1 Answer

Car was running fine next lost power hard to keep running black smoke comes from exhaust acts like running on 3 cylinders

Black smoke is from oil burning through the exhaust. It sounds like the rings are shot since a lost of power is your problem. If power was not an issue it would be a bad valve seal

May 09, 2010 | Chevrolet Corvette Cars & Trucks

1 Answer

Where is the egr valve on a 2005 dodge 1500 5.7L

The electronic EGR valve and solenoid assembly (3) is attached to the front of the right cylinder head (1). An exhaust gas routing tube connects the EGR valve to the intake manifold.


Disconnect electrical connector (1) from EGR solenoid (2). Remove two bolts (3) connecting EGR tube (4) to valve assembly. Remove gasket located between EGR tube flange and EGR valve assembly.

Remove two mounting bolts (2). Separate valve assembly (3) from cylinder head (1). Remove and discard metal gasket located between cylinder head and valve assembly.
The new EGR valve will come with a new metal gasket. You can reuse the smaller gasket for the metal pipe going to the egr valve as long as its not damaged.

TY for using Fixya; remember rated this post.

Apr 14, 2010 | 2005 Dodge Ram 1500

2 Answers

Won't run at full speed continuously. Cycles speed up and down even at full throttle.

Check and make sure the exhaust outlet is totally open. If it has a metal gauze screen slide it out and wash with carby cleaner and replace.
Blocked exhausts are common problem in 2 stroke engines because users run the motor too slow and it ( + oily residue) carbons up the exhaust. With a blocked exhaust, usually the moror will start and idle pretty ok but will screw up when you try to run at full revs.

In Australia we get mud wasps building nests in there - a quick poke out of the mud and she's running full throttle again.

ps. Don't fiddle with the 2 mixture screws - unless your know what you are doing. You will only make it worse!!.

Nov 07, 2009 | Homelite Consumer Products Backpack...

1 Answer

Starting problems

Hi and welcome to FixYa,

A way to verify start the bike from the cold. Note which exhaust will not heat up after the start (carefully). If the exhaust not heating would be from either cylinders 1 & 4 or 2 & 3, then it would be an electrical/ignition problem. If on the other hand what will not heat up will be the exhaust of 1 & 2 or 3 & 4, then it would be a carb/fuel problem.

Alternately, removed all the sparkplugs, reconnect to the cap and lay on metal part, start the bike. Note for absence or presence of spark on plug ends.

Good luck and thank you for asking FixYa.

Jun 28, 2009 | 1991 Yamaha FZR 1000

1 Answer

Metal shards in hot water

I would save the shards, package up the machine and take it back to the seller. If you don't have your receipt, credit card receipt, take a copy of your check, anything.Take pictures of everything and write down everything that you do and date it.

Be insistent with the seller and tell them you expect them to back up the product s they sell. they may or may not cooperate. It is a situation where they and the company are susceptible to a lawsuit, so you can be pretty confident here.If you have had it for awhile, then call the manufacturer, tell them your problem and that you expect immediate refund for this dangerous piece of equipment

saeco USA Inc.

7905 Cochran Road Suite 100
Glenwillow, OH 44139
Tel. 440-528-2000
Fax 440-542-9173

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Good Luck to you. Thank You for using Fix Ya. Your rating is always appreciated.

Aug 25, 2008 | Saeco Easy Espresso Machine

1 Answer

Central vac toast?

Most of these motors, the fan cover is just pressed on, but getting off isn't easy and you don't want to bent it up. Maybe using a flatblade try to knock it off from the edge of it may loosen it enough to pull it off.

Mar 18, 2008 | Vacuums

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