Missing/Idle Problems
- Thread starter CajunKenny
- Start date
Nice, give the guy that put it back together a bonus! 
Let me know what your vac does after fixing this
Let me know what your vac does after fixing this
Ha. That would be me!!
So what now...new tensioner and timing belt or just line it up and call it a day?
I can't believe it jumped so many teeth!
Props to jdub by the way!
So what now...new tensioner and timing belt or just line it up and call it a day?
I can't believe it jumped so many teeth!
Props to jdub by the way!
Meh...what's 1 or 2 teeth
Max travel on the CPS...low vac...running like crap = jumped timing.
Assuming the rest of the tensioner is good, all you need is the spring (a new one). Remember what I told you about torque on that. After 500 miles or so after replacement, you *should always* check timing belt tension and do a reset on the tensioner. I suspect you didn't Kenny, and this is often the result.
Once you get it all lined up, it would still be a good idea to do the dowel trick and confirm the #1 piston is in fact at TDC with the crank pointing at zero.
Max travel on the CPS...low vac...running like crap = jumped timing.
Assuming the rest of the tensioner is good, all you need is the spring (a new one). Remember what I told you about torque on that. After 500 miles or so after replacement, you *should always* check timing belt tension and do a reset on the tensioner. I suspect you didn't Kenny, and this is often the result.
Once you get it all lined up, it would still be a good idea to do the dowel trick and confirm the #1 piston is in fact at TDC with the crank pointing at zero.
i think ill re check mine and throw a new spring on there, they are cheap!
imagine if this was an interference motor, you'd be buying another motor!
Buddy lost an audi a4 to this same exact thing, neglected the timing belt maintenance and it jumped and trashed the motor in a heartbeat.
imagine if this was an interference motor, you'd be buying another motor!
Buddy lost an audi a4 to this same exact thing, neglected the timing belt maintenance and it jumped and trashed the motor in a heartbeat.
jdub;1290172 said:
Not that I would've known to do this anyway; but, when I bought the car it had 4k on the rebuild. So I guess that puts me in the clear! :biglaugh: Unless I did that when I repaired the bhg! :sarcasm:
Ok. Will do the dowel trick and verify that.
I will reset the tensioner and order a new spring.
Thanks everyone!!!!
grimreaper;1290186 said:
Yeah, I think I'll get like three of them. Are they a dealer only item?
I don't even want to think about it being a interference motor. My buddy just lost the motor in his Turbo Beetle to this also. I don't think I'll EVER own an interference engine. EVER!
Ok. Got it all lined up and timed. She's purring like a kitten.
New problem though. Now there is a horrendous rattle coming from/near the CPS. I'm going to switch back to my other CPS to rule that out. If the rattle continues after I replace the CPS, I'll pull the valve cover and do some inspecting.
I hope I didn't damage a valve or bucket or shim etc...
grim: Vac is still the same at idle. ~15 inhg.
Can anyone else chime in and post their vac at idle readings?
Thanks!
New problem though. Now there is a horrendous rattle coming from/near the CPS. I'm going to switch back to my other CPS to rule that out. If the rattle continues after I replace the CPS, I'll pull the valve cover and do some inspecting.
I hope I didn't damage a valve or bucket or shim etc...
grim: Vac is still the same at idle. ~15 inhg.
Can anyone else chime in and post their vac at idle readings?
Thanks!
Kenny - Take a look at this:
http://www.cygnusx1.net/supra/TechTips/vacuum_gauge_readings.aspx
Sure your timing is correct? Did you check TDC vs the damper index?
http://www.cygnusx1.net/supra/TechTips/vacuum_gauge_readings.aspx
Sure your timing is correct? Did you check TDC vs the damper index?
I just got back in from doing that. And the mark is at the top of the zero. Not in the center of the zero.
Dumb question here; but, where should the mark land EXACTLY while the piston is all the way up?
Thanks for the link!
Dumb question here; but, where should the mark land EXACTLY while the piston is all the way up?
Thanks for the link!
That's close enough
Did you set timing at 10 deg BTDC with the diag block jumped and idle at 650-700 RPM?
Did you set timing at 10 deg BTDC with the diag block jumped and idle at 650-700 RPM?
Idle was more like ~500; but, yeah. I waited for it to warm up and after the ECU "leveled" out, I adjusted again.
After my last adjustment, it was right at 10*BTDC at ~600 rpm with the jumper in and it went to ~15* with the jumper out.
I still have that loud rattle.
I then rotated the timing belt to inspect all the cogs and found that there is a small tear right in the center of the belt. I'll be replacing that this weekend! SIGH...
After my last adjustment, it was right at 10*BTDC at ~600 rpm with the jumper in and it went to ~15* with the jumper out.
I still have that loud rattle.
I then rotated the timing belt to inspect all the cogs and found that there is a small tear right in the center of the belt. I'll be replacing that this weekend! SIGH...
NP...I'll be heading to Frankfurt tomorrow. The link I posted should help.
Just to confirm, the 15 in/hg is steady at idle...no bouncing around.
Just to confirm, the 15 in/hg is steady at idle...no bouncing around.
Ok jdub. I plugged both the ISCV and PCV lines at the same time and the car died. It idled VERY rough with them disconnected before I plugged them. It died pretty quick too. It didn't try to stay running at all.
In reference to the link: I'm at ~650' above sea level and pulling a SOLID 15.5 inhg of vac. When I blip the throttle the gauge shoots up to zero then falls back to 20 inhg. After that it recovers to the solid 15.5 inhg.
So is it compression and leak down test time? :sarcasm:
In reference to the link: I'm at ~650' above sea level and pulling a SOLID 15.5 inhg of vac. When I blip the throttle the gauge shoots up to zero then falls back to 20 inhg. After that it recovers to the solid 15.5 inhg.
So is it compression and leak down test time? :sarcasm:
No vac leaks...well, that's good and elminates one cause.
Even for your altitude, your vac is a bit low.
That's what I would do
Even for your altitude, your vac is a bit low.
That's what I would do
Is it normal for idle to increase when the vac line between the manifold and the fpr is pinched? Aeromotive AFPR by the way...
It's the same as if you pulled it off (open to atmosphere)...FP should increase. That results in a higher idle, same as the fuel pressure up VSV does for start under high coolant temp conditions.