If the belt has been installed properly to that point, all of the slack will be in that portion of the belt adjacent to the tensioner. I was able to obtain a 350 long block real cheap a while back because somebody had this problem. The problem was, it seemed that the cam alignment mark was always 1/2 tooth off. Could my belt be off by one tooth? I've learned the hard way to mark the TB with a yellow paint pen before removing it. EDIT *May 11, 2009* - This turned out to be a bad distributor cap. However, if you go the other way, and your intake cam is off a tooth, it may not start at all, or flood out. For a better experience, please enable JavaScript in your browser before proceeding. Thanks everyone for all their input. Kevin . If that was the case, you just wouldn't be able to dial your timing in like you may want. This is where I left it, and I'm fairly confident it is right-- while I can't be 100% certain there's a loss in power (I haven't driven the van in 3 months) it does feel noticeably more sluggish, whereas I would expect an increase in power due to the valve job & HG swap. Reply | Report as offensive | Link. I assume my ECU would try compensating for it, and maybe it could do a good job at it-- … Pulled the valve cover off, and the CAM markings were at 2:30 posisiton (should be 3:00). Smoky. I'm used to having timing marks on the belt itself, which practically eliminates any chance for error, but the belts on these engines are absent of any markings. A chain that has jumped two or more teeth may not start at all. One tooth out on the timing belt would produce either of these sets of symptoms. There is no doubt that almost all drivers know that the timing, either belt or chain, is an extremely important car part for the engine, and it needs to be changed at some mileage number or a certain amount of time. Can anyone verify from these pics? element, and then using RTV to fasten the plastic back onto the metal housing. I had the engine out of the van, and replaced every seal, belt, plugs, etc; pretty much all maintenance items have been replaced. The sensor broke when I was working in the "V" of the engine, the plastic broke off the metal housing. 6 Answers. I am only getting one OBD-II code, which is for the knock sensor. The engine is going to make a metallic sound as the timing chain beats the innards. Thread starter 92saturnsl2; Start date Jun 10, 2015; 92saturnsl2. How do I tell if my timing is off by one tooth? JavaScript is disabled. In order for the engine to properly burn fuel, the fuel must be ignited at the proper moment during the combustion cycle. Although my timing belt is set perfect, my cams were swaped into the new cylinder head, and so I am wondering, what would the symptoms be of a cam chain being off perhaps one tooth? Robbie. I line 'em up but after releasing the tensioner, they are off. This will also feel like a loss of power. Only thing I've observed is what I believe to be a slight loss of power, perhaps on the order of 5-10%. If the tensioner isn't tensioned all the way it would be off even more since more tension would pull the gear back CCW slightly. This happens because the firing sequence is retarded due to a chain that has jumped a tooth. This happens because the firing sequence is retarded due to a chain that has jumped a tooth. Easiest way to fix that is like robbie said. This appears to be a common occurrence, as I attempted to pull a sensor from a junkyard vehicle (to replace mine), and the same thing had happened to theirs, even before I used a wrench to remove it. One tooth off on one cam is all it takes to either have the car run poorly, or in the case of the R/T, shred the belt in a couple hundred miles. Of course I noticed it right away and as that was all I had done I knew what the problem was. 1 one plug wire in the no. If it is off by one tooth, and a non-interference engine, it may run, but not well. With a tooth off, depending on the direction, you should notice that the idle is a little low. It's not so much a matter of it being 1 tooth off, as it is being 1 tooth too many off. Wed 22 Aug 2012 12:19 . Idle was silky smooth perfect, but it struggled to make power. If it has an adjustable pump sprocket it could be altered slightly but its unlikely that it has been. The following applies to my work with a Mazda JE engine - 3.0 l SOHC. Otherwise I can give you the data from vehicle to compare against. And that one should end up on a dyno some day. Sometimes called an "executive car", the S80 was and continues to be Volvo's top-of-the-line passenger car. Did you use an OEM timing belt? I was hoping someone with experience could give me some common symptoms to look for to see if my timing is off. What are the symptoms of bad belt timing? I don't have any of the time tools yet, but it was visually evident that the cam slot was not perfectly parallel with the valve cover face and using a mirror I could see that the IP was not lining up with the alignment hole either. Your knock sensor will reduce power & stop vtec from operating. Here are the symptoms of a timing chain that’s jumped. Of course I noticed it right away and as that was all I had done I knew what the problem was. Vehicle in question is a 2004 Honda Odyssey EX with 138k miles. Noise– A good indication that a timing chain has jumped is going be noise. After removing the heads, it was clear that the front HG had failed. Unfortunately they had also advanced the ignition timing in an attempt to make it run better and it had detonated all the top ring lands off too, so it had to be rebuilt. - Help... Over the years I have received a number of emails similar to the one that follows. I noticed when the timing was out by one tooth on the exaust cam on my Vectra (see ... poor low down power, poor MPG, over-run are all symptoms of incorrect timing. To avoid parallax error (ask me how I know about this. For anyone that is still reading this thread, I redid my timing belt, and my idle is now rock solid. losing power on one tooth, seriously low power to no running on two. I assume my ECU would try compensating for it, and maybe it could do a good job at it-- … Help, Advice, Owners' Discussion and DIY Tutorials on the Volvo S80 model. The marks should line up properly before the tensioner pin is pulled. Although my timing belt is set perfect, my cams were swaped into the new cylinder head, and so I am wondering, what would the symptoms be of a cam chain being off perhaps one tooth? Or is it imperative to set timing to the marks before tension is applied? I've seen the machine shop send back the wrong pulleys for a set of heads. I wish I could have even 10% of your ability but it surprises me that you are overlooking something so basic like this. The tensioner, engaged, will not pull the cam or crank pulleys out of position. The knock sensor code disabling that is hurting power more then you might think IMO Yes, one tooth off could be the problem, OR some chains are cut way WAY off. My suggestion to you is to pull the timing cover off and check the timing chain. Obviously, the car would be weak whether it's advanced or retarded a tooth, but for those who have been there before, what did you see.I have … Performance Decrease– If the timing belt has jumped a few teeth, but hasn’t fallen or broken off yet, it can knock the engine out of time. 599 Posts #10 • Oct 3, 2011. Ignition Timing Symptoms by Paul Novak . Removing the timing cover, the belt and all looked good, but when TDC was lined up on the ring gear, the cam and the IP looked to be one tooth off. It’s important to know the symptoms of a bad timing belt or chain, so this doesn’t happen to your Mitsubishi Montero. I did mark the old belt, however, where the camshaft was, so I'm 100% sure there's the correct number of teeth between the cams. Toyota - Camry - I just replaced the timing belt in my 2000 Camry 4-cyl. Pull the cam cover off and check with the tooth count method to find out for sure. Timing belts are a normal maintenance item on a vehicle. HOW TO KNOW IF A CAR JUMPED TIMING CHAIN TIMING BELT. SYMPTOMS JUMPED TIMINGHow to know if a car jumped timing chain without taking the engine apart? "Your dizzy is one tooth off, pull it out and restab it in the correct position." Do the symptoms of my car sound like a timing belt is misaligned, and can a car even run if off by one tooth? put all wires in place and time. They almost always end up a tooth or two off for me, hondas, toyota, ect. 2002 Dodge Stratus SE Sedan FWD-Maintenance & Repair. This will lead to a performance decrease. Jun 10, 2015 #1 Vehicle in question is a 2004 Honda Odyssey EX with 138k miles. What I've been doing is, release the tensioner again, then hold the crank with one ratchet, and turn the cam with another, with the belt still on. So yes you may be right and the cam is one tooth off. I could safely say that is not the problem here, because I'm not experiencing anything significant-- just a slight, but noticeable decrease in performance. SCore, I was 2 teeth off after I put the engine to TDC, lined the crank marks up to the TDC mark. Thanks in advance for any help. C. The car has been sitting for about a year with the same gas in it so I didn't know if that could be the problem or if my timing is off. The Marks need to line up after the tensioner is released & the Cranks has been rotated 2 revolutions. I ask this because the engine is 100% smooth as silk, quiet, basically runs like a dream with no driveability issues whatsoever. I started it and it shakes and sounds like it is misfiring. 1 spot on the distributor, it's about a 10 minute ordeal to move the distributor (unless you drop the oil pump drive shaft into the pan *LOL*). P.S. If it is an interference engine, the timing belt being off can cause the valves to hit the pistons. since the belt is loose, it can and will skip a tooth when you do this. head) on the front cylinder bank. I took off the timing cover and put the balancer on the zero mark when I do this it looks like the timing mark on the cam pulley is one tooth off. The timing belt is responsible for keeping the camshaft(s) in sync with the crankshaft. Symptoms of Being 1-Tooth Off on Cam Timing - posted in Advanced Virtual Mechanic: We were having some discussions around the shop regarding what the symtoms would be if you were 1-tooth off on cam timing in either direction (with a stock cam). If the cam is one tooth retarded, the engine will start and run and be driveable but it will be way down on power. If it was off by 1 tooth the car would not start.If you were off by 1/2 a tooth you lost 5 -12 mpg and 10 -15 HP . If your confident its not the tune, Id suggest pulling the radiator and taking off the timing cover. 1 one plug wire in the no. One tooth off might make it where you cannot turn the dist far enough to get timing correct if that is the case just jump the wires one spot back or forth which ever is needed other wise the dist doesn't know it is one tooth off. None of their guesses fixed the problem, and the owner ultimately sunk about $2,000 chasing this down. Try a rapid acceleration and look for engine stumbling and backfiring. 6 Answers. SYMPTOMS JUMPED TIMINGHow to know if a car jumped timing chain without taking the engine apart? No bent valves from just one tooth off with stock cams. I just took the car to local mechanic and just got off the phone with him. If the marks lined up after 2 two rotations its okay. Do the symptoms of my car sound like a timing belt is misaligned, and can a car even run if off by one tooth? The best thing that you can do is have the vehicle timing belt service performed on schedule. Easiest way to fix that is like robbie said. Timing Chain Jumped Symptoms. I hope you got the water pump done at the same time because if that goes it will snap a new timing belt and that is not under antones warranty. Setting the belt one tooth in either direction made the marks WAY off, so the "half tooth" position must be correct (at least on these two engines). Or has anyone had similar trouble setting timing as I have? One hallmark sign I see when the belt is off a tooth is the inability of the engine to rev quickly. definitely off and would explain the rear misfire and lack of compression. move the #1 wire to align with the rotor, rotate distributor if needed. Because I can see two ways of installing the belt: You're either correct (timing marks line up) before tensioner is released, but it moves one tooth off when tensioner is applied... *OR* you install it "wrong," being one tooth off, and then once the tensioner is released and engine spun, then the lines match up nicely. Any such symptom means that the timing sequence has changed. We took off the timing cover and cam plate and sure shit, it was 1 tooth retarded. Good Job, Glad to see you back on the road. Someone recently commented my new timing belt install was off a tooth. Purchased this in January of this year; days later, I found recent service records where the PO had problems with the engine overheating, and temp gauge going into the red. If it's off only one tooth I think it should be fine. I had the timing chain off by 1 tooth a V6 Ford (2.5L Duratec, DOHC) a few years ago. So yes you may be right and the cam is one tooth off. The passengers side cam sprocket was off by one tooth on the chain. Don't you think it would be reasonable for the engine to retard the timing if it knows something is wrong with the knock sensor?If you were in charge of the engine computer, would you or would you not put that in the program if you had to write it? One tooth made that huge of a difference, I'd almost expect a Nissan motor to have similar results. The Knock sensor needs to be replaced, The Ignition Timing will be retarded without a functional KS! You would have to make exterior adjustments to band-aid the situation. With the compression numbers you have I doubt you're off on mechanical timing. … TELL THEM A HONDA MECHANIC SAID THE TIMING IS OFF ONE OR MORE TEETH AND MUST BE CORRECTED. Did you send the cam pulleys in with the heads? My machinist told me on Brand X, 9 to 11 degrees off between a cam and chain was not un common! After 3000 RPMs it pulls as it did before the project and sounds like it did before the project. How do I tell if my timing is off by one tooth? A $410 valve job and resurfacing of both heads, and lots of my time later, I have the van back up and running. And look for to see you back on the subject would sure be appreciated someone with experience could give some! Websites correctly noticeably improve performance and then using RTV to fasten the plastic back the. A bit past it ( CCW ).. [ SIGPIC ] http: [. 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