[99v6stang]

okey so i just finished reassembling my car and today was the first day driving it and after about 6 minutes of driving it killed, smoke came into the car, and it wouldnt start again. I popped the hood and smoke was pouring out of where the lower intake meets the block, everything in the engine bay was abnormally hot. The engine temp gauge showed it was operating at normal temps but i dont believe that was the case. I was running just open headers, and i did just delete the egr. I had the cam, heads, and intake all off the car and put back on. What did i do wrong and what must be done to fix it? PROM IS SATURDAY< PLEASE HELP ME

[ESG-642T]

What did you change on the car?

[Cricket]

you were running open headers? So you didn't have a midpipe on the car? Are they shorty headers?

[dgt_mustang]

maybe to much heat from open headers started melting hoses until the actual temerature underneath the hood was to hot, engine could have been operating at normal but not its envioronment? maybe?

[itschristorres8]

no to the above..

did you put silcone and use new gaskets for the lower intake and the silicone where the gaskets meet?

whats your oil look like.
if its massive smoke its most likely a coolant issue.
and i hope you didnt re-use the head gaskets or head bolts..

[99v6stang]

it wasnt massive amounts of smoke, but it was some. I havent had a chance to look what the oil looks like. I did put rtv gasket maker on both sides of the lower intake gaskets just like reccomended by ssms. I did however reuse the head bolts, the haynes manual said on the v6's you could and they were only used for three thousand miles. I have long tube headers, still running the front o2's and the rears are shut off. I ran it with no midpipe or anything but litterally for only about 5 or so minutes. Also when drving the car seemed slughish and reved up some when i gave it gas but didnt seem to speed up much.

[99v6stang]

the thing i am worried about is how long does the rtv take to set up? i only waited five hours but i was told by a local mechanic that would be plenty long enough, could that be my problem? This isnt anything to do with a timing isssue or anything is it?

[itschristorres8]

you cannot re-use the head gasket or head bolt.
once your torque them and stretch the thread the first time that same torque that you need the second time will not be applied..

knowing that theres smoke in the engine bay isnt all to helpful. if your oil is a milky color or isnt brown you have a coolant leak

[itschristorres8]

Originally Posted by 99v6stang the thing i am worried about is how long does the rtv take to set up? i only waited five hours but i was told by a local mechanic that would be plenty long enough, could that be my problem? This isnt anything to do with a timing isssue or anything is it?

well if it was cam timing your car would run like hell. you did time the cam properly i assume?

also i would have waited a little longer but that should have been fine. RTV acts up sometime
which RTV did you use?

[99v6stang]

well i will check the oil after school. The smoke seem to be coming out right in front by the china wall where the lower sits, kinda right by where the cam sensor is. Also could this be an issue relating to the cam position sensor? i did not use the tool, i used instructions from rpm-mustangs on how to do it without a tool

[99v6stang]

i used the black hi temp stuff like ssms reccomened, and as for the timing i did it exactly like the haynes manual showed, put it at tdc by lining up the mark with the crank pulley mark, installed all the gears so they line up like they are shown in the manual, then torqued them and installed my new timing chain and tensioner. The car did seem to run pretty crapp but it was running open headers so it was near impossible to tell

[itschristorres8]

it may have been on TDC remember you also have to see if the valve(s) in the cylinder as well for the correct timing

[99v6stang]

it seemed to be correct, both intake and exhaust on cylinder one were riding on the base cirlces. Im just worried it coul have been off just a little

[stephen]

Originally Posted by 99v6stang well i will check the oil after school. The smoke seem to be coming out right in front by the china wall where the lower sits, kinda right by where the cam sensor is. Also could this be an issue relating to the cam position sensor? i did not use the tool, i used instructions from rpm-mustangs on how to do it without a tool

Yes it could have to do with the cam position sensor. The tool isn't that expensive. You should get it and check the timing of the cam position sensor. The engine needs to be at TDC on #1 compression stroke and the tool holds the shaft in the right position with respect to the body of the sensor. A good time to set it is before you install the front cover with the timing gear marks lined up. However, if the crank pulley TDC mark is lined up with the pointer and the valves on #1 are closed that's OK.

One possibility is that there is a timing issue causing the engine to overheat.

In installing the lower intake manifold gaskets, you shouldn't need RTV on the gaskets themselves, just in the corners where the gaskets come together.

You really should replace the head bolts every time you remove them.

I have read the SSMS instructions for setting timing and I really think they are not very good.

[99v6stang]

could you give me better instructions for timing? and ssms said to coat the whole gasket, perhaps that was a mistake. The problem with the cam position sensor tool was that i dont have time to order, so thats why i was doing it without it. If the timing was causing the engine to run too hot why wouldnt the guage have said it was overheating?

[itschristorres8]

Originally Posted by stephen Yes it could have to do with the cam position sensor. The tool isn't that expensive. You should get it and check the timing of the cam position sensor. The engine needs to be at TDC on #1 compression stroke and the tool holds the shaft in the right position with respect to the body of the sensor. A good time to set it is before you install the front cover with the timing gear marks lined up. However, if the crank pulley TDC mark is lined up with the pointer and the valves on #1 are closed that's OK. One possibility is that there is a timing issue causing the engine to overheat. In installing the lower intake manifold gaskets, you shouldn't need RTV on the gaskets themselves, just in the corners where the gaskets come together. You really should replace the head bolts every time you remove them. I have read the SSMS instructions for setting timing and I really think they are not very good.

+1

also the rear main seal needs a big of RTV on the end as well

we have rubber style gaskets for the intake to heads but on paper style gaskets i like to put a a thin stream of RTV on water jackets from heads to intakes.

[itschristorres8]

Originally Posted by 99v6stang could you give me better instructions for timing? and ssms said to coat the whole gasket, perhaps that was a mistake. The problem with the cam position sensor tool was that i dont have time to order, so thats why i was doing it without it. If the timing was causing the engine to run too hot why wouldnt the guage have said it was overheating?

stock gauges suck first off
and its possible that your coolant might actually be at the operating temp
6min is pretty hard to over heat from a cold start.
i could run my car with a blocked thermostat for 6min with out an issue..unless you were really on it for those 6min coolant and over heating isnt the issue

[99v6stang]

i gave it a little gas but nothing much, i cant imagine it overheating in such short time.\

[itschristorres8]

Originally Posted by 99v6stang i gave it a little gas but nothing much, i cant imagine it overheating in such short time.

it shouldnt which is why i said i dont think its a over heating issue.

[Onemanzu]

im saying right now, before reading this thread, blown gaskets