Cam timing

[iwannagofast89]

My cam timing is one tooth off, i dont know if its Exhaust or intake, but one is off and my car wont start, I've searched and the one i found wasnt answered.

 

[SOADweskey]

Well you need to get it right on. One tooth doesn't normally stop the car from starting, in my expierience it causes a crap idle and usually doesn't kill valves.

But to get it right you need to maunually turn the engine from the crank and line up the bottom timing marks on the crank and the oil pump sprocket with tthe cam timing marks close together and then you need to re-do the timing belt job and place a straight edge across all four marks on th cam gears to make sure they are in a straight line, EYBALLING IT IS NOT GOOD ENOUGH, YOU HAVE TO USE A STRAIGHT EDGE!

 

[diablos991]

If your timing is off by a tooth then at the very least you have to take off the timing belt and realign the timing.

If your timing jumped a tooth then it is possible that your valves came into contact with your pistons and the valves would have to be replaced.

 

[iwannagofast89]

well i know they are bent because I've dont a leak down test. And I only have 3 mark 2 onthe exhaust, one on the intake(2g cam gears) the only srtaight edge I had was a brand new peice of paper.

 

[V8notENUF]

How do you know your timing is off one tooth? Did you recently have the timing belt replaced? Chances are if your car won't even start that it is off more than one tooth. I recall in another thread that your car made a weird metal to metal sound when trying to start.

From another thread

Well i haven't really had a lot of problems but I bought had a blown tranny replaced that with a 93 n/t tranny, then I thought I had a blown head gasket so I bought a cheap ebay head gasket set(from CNS Auto (don't buy from there!!!)) turns out I didn't have a blown head gasket, put the new one in and I got 47 miles and then Truly did have a blown head gasket. Then bought .020in. bigger then stock one from Auto zone.....come to find out after that I bent valves. Now I have the rebuild motor back in the car and the cam timing it off when it was dead on before I put the motor in. Somewhere it jumped a tooth..oh and when trying to start the car it makes this godawful metal to metal noise. But in a sense I kinda had it coming because i didn't really treat it good

Have you been drinkin?

 

[iwannagofast89]

Yeah thats with the starting system but I held a peice of paper up to the cams and the two that suppose to line up are about 1/8 away from eachother (exhasut is the higher one)

 

[fourreGsixty3]

well i know they are bent because I've dont a leak down test. And I only have 3 mark 2 onthe exhaust, one on the intake(2g cam gears) the only srtaight edge I had was a brand new peice of paper.

What? Please make your post's make more sence.

This is what the timing should look like... http://www.dsmtuners.com/forums/showthread.php?t=273525&highlight=timing+marks

To move your marks to get them to line up, you can put your car in 5th gear, and rock it back, and forth. This will slowly move the crank (thus all the other pulleys) so that you can see how off everything is. If the cam gears are just off one tooth, that wouldnt create a no start. If you dont want to remove everything, you can use a piece of 3/8" rubber fuel line, and put that on the cam gear [before were the t-belt rests on the cam gears] then rock the car back, and forth in 5th gear. Using the 3/8" piece of fuel line will advance the timing one tooth.

This is my personal experience with working on my own cars, and working flat rate. It works for guys here at the dealership as well.

Also for a straight edge you can use a ruler, and piece of paper is not my forst choice since it is flimsy (sp?).

 

[iwannagofast89]

well thats the straightest thing I have arounf my house and I dont think I'll do that just for the risk of stretching the timing belt, and if I did why couldn't I just turn it over at the crank

 

[fourreGsixty3]

Well to keep everything attached, and to make things easy to make small changes its easiest to rock the vehicle back, and forth.

 

[iwannagofast89]

well I have everything unatached any ways, how garentied are you that it would f!@# the timing belt up

 

[tqmx1]

Pray tell, I know this has been gone through before but it sure sounds like #1 is not at TDC.

Or the other way fill the intake with starting fluid and crank. Eather it will start or you and crusen will be picking the head out of the rafters

Good luck.

 

[fourreGsixty3]

well I have everything unatached any ways, how garentied are you that it would f!@# the timing belt up

Really depends on the condition of the t-belt. But then again nothing is garenteed. I havent had any problems but if your un-sure, and your sure its due to the timing then you should just remove the head, and do the timing manually.

 

[V8notENUF]

Or the other way fill the intake with starting fluid and crank

+1

 

[iwannagofast89]

tried that it didnt work

 

[iwannagofast89]

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[TerribleTSi]

Dustin is right you gotta get everything lined up and get yourself a starting point, rocking the car in 5th gear will get you where you need to be. but then again you are not in a shop or anything. if you have the time/materials you need to pull the timing cover and rotate the crank by hand. sounds like the car isn't going anywhere. if the timing is off any amount of teeth the car will always start until it is off enough teeth. sadly if it is 2 or 3 teeth off you need some new valves.

when you crank it what does it sound like. bent valves/no compression cranking is very distinctive. the motor cranks with the speed of the starter.

 

[iwannagofast89]

the starter makes so much noise I cant tell if there would be valves hiting the compression is 110, 110, 110, 120 and the leak down test showed no air pasing the valves

 

[tqmx1]

Well I think it's time to take it to a mechanic that knows what they are doing!!

Correct me if I am wrong but is this not the one you & crusen have been puttsen with for the last 2weeks.

If I am wrong I am sorry.

 

[iwannagofast89]

why pay someone else to do work when I can, it's a waste of money

 

[tqmx1]

Boy you sure have a nice paper weight then.

 

[92awddsm]

From the pic, the cam marks look like they aligned properly. Rotate the engine clockwise a hair to line the marks up and put a straight edge on them. These marks should line up perfectly with the valve cover mounting surface on the head. Now, check the crank pulley and make sure it is lined up properly.

 

[iwannagofast89]

the crank mark is right on

 

[blcknspo0ln]

the starter makes so much noise I cant tell if there would be valves hiting the compression is 110, 110, 110, 120 and the leak down test showed no air pasing the valves

Doing a compression test on a cold motor will not yield correct results. If you're saying that your starter is making noise, is it engaging correctly?

 

[iwannagofast89]

No I dont think it is engaging correctly

 

[diablos991]

If you are questioning your starter, remove it and get it tested.

Also check all your connections from the battery to the starter for corrosion.