I was boosting in 3rd gear at about 6-7000rpm, and my engine just suddenly shut off. There was no loud breaking sounds at all though, but the oil light came on and I just coasted to the side. When I looked at the engine, there was no damage visible from the outside, but I noticed the crank pulley bolt was gone. I was using no name lightweight pulley. The pin that is supposed to keep the pulley, crank, and oil pum gear aligned was wedged halfway out, and the oil pump gear didn't line up. When I turned the crank with a ratchet, it seemed to spin freely.
What do you think happened to the engine if the pin lining up the oil pump gear came out?

 

ok is it an 8 or a honda?

no name crank pulley usually = oil pump destruction. if the bolt came out, and your crank sprocket is the kind where it doesnt have its own woodruf key, at the very least you jumped a rediculous ammount of time, and need to start there.

put the belt on, and do a compression and leakdown test.

 

What kind of car? if that crank gear came foward it may have screwed with the timing.. more than likely, the crank pulley bolt was loose or just not tight enough. take it apart check the timing.

 

Its an h22. The pulley was still in place, and the key was too, it was just sticking out because the bolt fell out. As far as timing, Im pretty sure the timing belt wasn't affected, the engine spins freely, and the cams line up. Just wondering if the oil pump may have lost pressure and maybe damaged something internally...

 

post some pics

 

I took the timing belt covers off, and the timing was off, so I reset the timing belt.
When the valve cover was off, everything in the head appeared to be perfect. The crank spins easily with a ratchet, but when I go to start the car, the engine makes a weird wind-up-toy like sound and doesn't even begin to start. Could it be a bearing or oil pump problem?

 

sounds like you bent some or all the valves.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by non-VTEC &raquo;</TD></TR><TR><TD CLASS="quote">sounds like you bent some or all the valves.</TD></TR></TABLE>

x2

 

The thing is, when I took the valve cover off, there was no apparent damage. I looked through the spark plug holes, and the top of the pistons didn't appear damaged, and the engine spins easily by hand if you put a ratchet on the crank pulley. So if the vavles were bent, wouldn't it be obvious from looking at the head? The engine also has low compression pistons, so Im not sure if the piston could even hit a valve. Let me know what you think...

 

DO A LEAKDOWN TEST!

After that, check for oil pressure when you're cranking. Then get back to us. We can't diagnose a problem with you only giving us some mystery symptoms.

 

do a quick compression test and get back to us....

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by non-VTEC &raquo;</TD></TR><TR><TD CLASS="quote">do a quick compression test and get back to us.... </TD></TR></TABLE>

listen to this, if all you hear is the starter turning the crank, and no compression noises, then you bent some valves. you cant see if there bent with the head on, you have to pull them and see.

Landon

 

yep that wind up toy sound is your motor turning over with no compression. pull the head and hope you only have to replace the valves.

 

bent valves some times you cant see the damage till the head is off

 

Ya, its making a hardcore wind-up-toy sound, so now that makes sense cause there is no compression to push against. I'm going to do a leak down now.

 

^^^dont waste your time if the timing is right and its just spinning over (and its not the starter) head must come off good luck!!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by rx-8guy &raquo;</TD></TR><TR><TD CLASS="quote">Ya, its making a hardcore wind-up-toy sound, so now that makes sense cause there is no compression to push against. I'm going to do a leak down now.</TD></TR></TABLE>

youll want to do a compression test not a leakdown. i got 5 bucks on it being intake valves anyone wanna bet on exhaust

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by CoreyR &raquo;</TD></TR><TR><TD CLASS="quote">

youll want to do a compression test not a leakdown. i got 5 bucks on it being intake valves anyone wanna bet on exhaust </TD></TR></TABLE>

well with him turning it over again and again im sure its both

Landon

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by CoreyR &raquo;</TD></TR><TR><TD CLASS="quote">

youll want to do a compression test not a leakdown. i got 5 bucks on it being intake valves anyone wanna bet on exhaust </TD></TR></TABLE>

Why would he want to do a compression test and not a leakdown? If it already has zero compression, a leakdown will tell you where you're loosing it from.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tokesGTR &raquo;</TD></TR><TR><TD CLASS="quote">

Why would he want to do a compression test and not a leakdown? If it already has zero compression, a leakdown will tell you where you're loosing it from.</TD></TR></TABLE>

yeah i guess thats true, but really hes trying to see if it even has compression, which im sure it doesnt. the head has to come off regardless so a leakdown is a kinda a waste. its not like your not gonna be able to tell if the valves are bent or not.

 

haha, so maybe I did the compression test wrong, but is it possible to have 0 compression in all cylinders? I thought there would at least be some.

 

if the valves are stuck open because they are bent then there wont be any compression at all.

 

Should I even bother with a leakdown test, or just pull the head? I was told that there is a small chance something is wrong with the piston and that you wont be able to tell with the head off just by looking at it. Also, if the valves are bent and there is something wrong with the pistons, wouldn't it be hard to tell with a leakdown, because the majority or the leak would go through the valves?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by steveludeh22 &raquo;</TD></TR><TR><TD CLASS="quote">^^^dont waste your time if the timing is right and its just spinning over (and its not the starter) head must come off good luck!! </TD></TR></TABLE>
stop asking the same question your going to start to **** people off
pull the head and look at your problem
end of story
we shouldn't see another post from you until...
"just pulled the head off and...."

 

cant beat around the bush anymore, teh head gotta come off.