Timing chain kit installed by shop and still light ticking
Service shop said my gf oil smells like gas they are hinting towards a bad o2 sensor witch is causing it to run rich thus the gass is not burning off and ending up in the oil than they called back and said it's because now the valve covers and intake gasket is leaking and they want 298 to fix this is all after they replaced the timing chain and guides and tensioners mind you that we had to have the car towed back the same day we got it back because one of the tensioners they just put in was bad so this is the third time it's in there shouldn't they have inspected the valve cover g
Experienced mechanics share their insights in answering this question :
If they had any of the valve covers and intakes off they should of put in new gasket seals. I would ask them to lower or remove the labor since they should of replaced the gaskets when they removed them for the last job. They may have damaged the seals and now they leak. Just ask nicely and you may get a break on the labor. If they end up doing the repair make sure they change the oil and filter. If you would like an independent shop to take care of this for you, a technician from YourMechanic can come to your home or office to inspect the smell and perform any services that are needed.
How to Identify and Fix Common car Problems ?
Our sources include academic articles, blog posts, and personal essays from experienced mechanics :
Chains can get sloppy but timing chains are especially durable and sometimes never even need to be changed in the life of an engine. If you just had your timing chain replaced and it is beginning to rattle around then you could have bad pulleys or the chain was not installed properly.
Just like any other misfunctioning component of the engine, a faulty timing chain will illuminate the check engine light. It is a warning to get your vehicle assessed for underlying engine problems, which might include a bad timing chain.
Rotate the eccentric to tighten or loosen the timing chain. The timing chain should be loose enough to prevent binding and tight enough to keep from falling off. The chain should move about 1/2″ for the front and 1/4″ for the rear without using force.
The most infamous sign that your timing chain is about to fail is a rattling sound coming from the engine.
Engine ticking sounds can happen for a number of reasons, like low oil pressure, a worn-out timing chain, or a bad timing belt.
A lax timing chain, or worse, a broken timing chain with loose parts within the engine, will produce a rattling sound when your car is idling. This rattling sound is typically most prominent while the engine heats up and disappears after some time.
A broken timing chain will cause an engine to not start or fail while driving. If the belt is already broken, the engine won`t have enough compression to start. If it breaks or jumps while driving, the pistons will be damaged from contact with the valves. The valves themselves will bend and potentially ruin the engine.
Timing chain replacement: warning signs
Timing belts must be replaced on a regular basis, but timing chains do not. There`s no reason to alter the timing chain unless it`s damaged, strained, or otherwise affected. If there is a problem with the timing chain, your car will most likely have one or more issues.
Timing chains don`t actually stretch.
This noise is caused by the timing chains becoming so loose that they whip back and forth against the guides and possibly the timing cover. If the oil pressure is correct, the replacement of the hydraulic tensioners and chain guides would be required. A mechanic`s stethoscope is a great tool to pinpoint this noise.
If your chain is dry, dirty, or rusted, binding can be occurring in the rollers of your chain, causing squeaking or even jumping over the teeth in your cassette and chain rings. If your chain seems to be moving freely, then it could be dirty or seized bearings in your derailleur jockey wheels (or chain guide pulley).
How Can You Quiet Your Car Engine? Once you verify the lifter ticking is not caused by a worn-out lifter or some other damaged part, the best thing to do is change the oil. Get rid of all the oil currently in the engine and flush it out before adding new oil.
Low oil pressure might be the cause of those ticking sounds. When vital engine components don`t get adequate lubrication, it might cause other problems, and the engine starts to make these noises. A broken valve train component, such as lifters or cam followers, can also cause ticking, tapping, or clicking sounds.
If the chain isn`t operating at the correct tension, there`ll be a knock-on effect on the engine performance. This can manifest in misfires, problems starting the car, its performance could feel sluggish or run low on power.
It absolutely CAN, DEPENDING. Depending on what is causing the engine to be “noisy”, and what type of oil is used. FAR too many variables to make a blanket statement BUT. I HAVE seen “normal” good running engines change “tone” simply by changing the brand and TYPE (NOT VISCOSITY) of oil.
Most engines have between 5-20 degrees of ignition advance at idle. This is referred to as initial timing.
The most important sensors of any engine, the crankshaft and camshaft position sensors are integral to the functionality of the distributor and ignition timing. The crankshaft position sensor monitors as a multifunctional sensor used to set ignition timing, detect engine RPM and relative engine speed.
A manifold vacuum and/or barometric pressure, throttle position, engine RPM, coolant temperature, and vehicle speed sensor all modify the timing program.
Chain failure can result in anything from a replacement chain kit, to substantial damage to the top of the engine – cylinder head, camshafts, valves and rockers. When replacing the timing chain, there are other items that should be replaced as a matter of course.
There`s another thing here – if you replace the chain, you also replace the sprockets. Every time. It`s not expensive, and good insurance, and sprocket wear will cause premature chain failure.
A broken timing chain will cause an engine to not start or fail while driving. If the belt is already broken, the engine won`t have enough compression to start. If it breaks or jumps while driving, the pistons will be damaged from contact with the valves. The valves themselves will bend and potentially ruin the engine.
AMSOIL fights timing chain stretch
If you drive a T-GDI engine that`s known to suffer from timing chain stretch, like the 3.5L EcoBoost, it`s best practice to use a good synthetic oil, like AMSOIL synthetic motor oil, and a quality oil filter to help fight soot-induced timing-chain wear.
The tensioner ensures the correct and necessary tension of the timing chain that surrounds the crankshaft sprocket and the camshaft sprocket. It exerts full control, making the chain run smoothly, preventing it from rattling and coming off the sprockets.
Low oil pressure or a tensioner that has become clogged due to dirty oil can cause it to fail and the chain to slack. This can cause the valve timing of the engine to change. Timing chains can stretch, slack, sprockets that they ride on and the guides that help hold them in place can wear and break.
Relevant Questions and Answers :
the most relevant questions and answers related to your specific issue
Timing chain kit installed by shop and still light ticking
ANSWER : If they had any of the valve covers and intakes off they should of put in new gasket seals. I would ask them to lower or remove the labor since they should of replaced the gaskets when they removed them for the last job. They may have damaged the seals and now they leak. Just ask nicely and you may get a break on the labor. If they end up doing the repair make sure they change the oil and filter. If you would like an independent shop to take care of this for you, a technician from YourMechanic can come to your home or office to inspect the smell and perform any services that are needed.
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need a way to retain the timing chain
ANSWER : The best way to approach this unfortunately is by using a timing chain tool retainer/holder tool. You may consider having an expert from YourMechanic come to your home replace the timing chain.
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Brake lights are not working. replaced brake light swtch still no brake lights. the third brake light the connection was melted at
ANSWER : The first thing to do is to repair third brake light and replace the brake light fuse and then see if the third brake lights work and the lower lights start working? If only the 3rd brake light starts working then you may need a further checks on the turn signal flasher or switch could be bad.
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No dash lights, back right tail light is out, no parking lights. Brake lights work though as does head lights.
ANSWER : Hi there. In many cases, when you have electrical problems like you’re describing, it’s caused by multiple electrical component failure. It’s likely that a few electrical relays are not working; especially if you have systems that utilize the same components (such as your brake light and tail lights). I would recommend having a professional mobile mechanic come to your location to complete an electrical problems inspection first, so they can pinpoint what is damaged and recommend the right repairs.
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Abs light, emergency brake light, steering wheel assist light, engine light, EPC light, traction control light
ANSWER : Hello, thank you for writing in. The vehicle does utilize a lot of the same sensors for these systems. Are there any other codes that are coming up when this code appears? If so you will want to take these into consideration when processing the repair and making a diagnosis. The module may be bad, and replacing it should fix the problem. The lights should turn off once the main computer recognizes the new module and the sensors sync up. If you believe the sensors need to be cleaned you may do so. Do as minimal as possible to make sure you are not damaging the sensor or disrupting the wiring inside. A bad connection would make the lights stay on. With so many lights that are effected by the module being illuminated, the module is likely bad or does not have a connection. Check the connection first and then resort to replacing the unit. For more help with these electrical tests, contact our service department.
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Timing chain positioning
ANSWER : This system is a bit complex. I can give you some instructions, but I highly recommend getting a hold of a repair manual or purchasing a yearly subscription for just your vehicle from AllData. It is only $25 for a years subscription from AllData.
There are two separate sets of marks on this system. One set is for aligning the timing chain to the camshaft gears and the intermediate shaft gear. There will be marks on the chain that raps around the crankshaft gear as well. These marks will not line up after you turn the motor over.The other marks are on the inside of the camshaft gears and align with the cylinder head parting line. If you were to draw a ling through the center of both camshaft gears, they should line up with that imaginary line.
The crankshaft key way should be aligned with the mating face of the main bearing cap. You can confirm it is in the correct position by verifying the number one piston is at top dead center. If you have removed the balance shaft timing chain, these marks really need a visual diagram to understand where they should be aligned. Without a diagram I am not very confident it can be explained very clearly.
This may be difficult to to follow, so again I highly recommend purchasing a repair manual in digital form or a book. If you feel this is over your head, I recommend the following inspection to help you out. Timing chain replacement
Good luck! I hope I was able to help you.
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2012 equinox reduced power light engine light and traction light came on. Lost a lot of power got home and all light except engine
ANSWER : Your car has what is called a "safe mode" that will be engaged by the computer when it detects that something critical has gone wrong related to any of the major components in your engine chassis or power train. This may be related to a number of things, most of which should have been registered in the computer when the check engine light came on. I recommend having an expert from YourMechanic come to your location to inspect your check engine light and diagnose any codes registered by your vehicle’s computer.
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signals, daytime running lights are not working, park brake light on dash is on steady and chime is dinging steady 4×4 wont engage
ANSWER : This is likely a brake light switch problem. I would suggest testing the brake light switch which should be located down by the brake pedal. This may also be a computer problem as well as indicated by the other lights on in the dash. I would recommend having an expert from YourMechanic come to your home to possibly replace the brake light switch and diagnose with a scanning tool which will download useful data from the truck’s computer indicating what specifically the problem may be.
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