Blown Motor?!
#1
Full Member
Thread Starter
Join Date: May 2002
Location: Irvine, CA
Posts: 185
Likes: 0
Received 0 Likes
on
0 Posts
Blown Motor?!
I was just playing with some manual boost controllers. Was adjusting the pre-control and my boost went up to 12 psi.
I held it for a while, thought it was safe according to some other posts.
Right now it's just a streetported motor with no mods.
Anyways, after the run I pulled over and everything seemed ok. I then revved the engine in neutral to about 2500 rpm and it now fluctuates with a steady rhythm like 2500-2250-2500-2250 and so on. It does this at all levels of rpm above 2500 rpm.
Did I blow an apex seal or anything? My vacuum at idle is same as before 14 inhg. What's going on?!!? Help please...I'm so scared.
I held it for a while, thought it was safe according to some other posts.
Right now it's just a streetported motor with no mods.
Anyways, after the run I pulled over and everything seemed ok. I then revved the engine in neutral to about 2500 rpm and it now fluctuates with a steady rhythm like 2500-2250-2500-2250 and so on. It does this at all levels of rpm above 2500 rpm.
Did I blow an apex seal or anything? My vacuum at idle is same as before 14 inhg. What's going on?!!? Help please...I'm so scared.
#2
Senior Member
Join Date: Mar 2001
Location: winston-salem, nc
Posts: 712
Likes: 0
Received 0 Likes
on
0 Posts
generally, if your engine is blown, it will idle very rough, the vac. will drop at idle (14 doesn't sound like a blown engine).
anyway, i'm not sure about your prob. but it doesn't sound like a blown engine.
anyway, i'm not sure about your prob. but it doesn't sound like a blown engine.
#3
Original Gangster/Rotary!
iTrader: (213)
Re: Blown Motor?!
Originally posted by mor
I was just playing with some manual boost controllers. Was adjusting the pre-control and my boost went up to 12 psi.
I held it for a while, thought it was safe according to some other posts.
Right now it's just a streetported motor with no mods.
Anyways, after the run I pulled over and everything seemed ok. I then revved the engine in neutral to about 2500 rpm and it now fluctuates with a steady rhythm like 2500-2250-2500-2250 and so on. It does this at all levels of rpm above 2500 rpm.
Did I blow an apex seal or anything? My vacuum at idle is same as before 14 inhg. What's going on?!!? Help please...I'm so scared.
I was just playing with some manual boost controllers. Was adjusting the pre-control and my boost went up to 12 psi.
I held it for a while, thought it was safe according to some other posts.
Right now it's just a streetported motor with no mods.
Anyways, after the run I pulled over and everything seemed ok. I then revved the engine in neutral to about 2500 rpm and it now fluctuates with a steady rhythm like 2500-2250-2500-2250 and so on. It does this at all levels of rpm above 2500 rpm.
Did I blow an apex seal or anything? My vacuum at idle is same as before 14 inhg. What's going on?!!? Help please...I'm so scared.
Also, are you pulling 14 inches of mercury at an idle of 1000 rpms or 2500 rpms? Big difference. Does the Upper Intake Manifold shake violently at idle? At a constant engine rpm while at idle does your vacuum fluctuate? Give me some more info and I can help you out.
#4
The Power of 1.3
Join Date: Aug 2001
Location: Shrewsbury, Massachusetts
Posts: 2,837
Likes: 0
Received 0 Likes
on
0 Posts
Re: Re: Blown Motor?!
Originally posted by GoodfellaFD3S
Also, are you pulling 14 inches of mercury at an idle of 1000 rpms or 2500 rpms? Big difference. Does the Upper Intake Manifold shake violently at idle? At a constant engine rpm while at idle does your vacuum fluctuate? Give me some more info and I can help you out.
Also, are you pulling 14 inches of mercury at an idle of 1000 rpms or 2500 rpms? Big difference. Does the Upper Intake Manifold shake violently at idle? At a constant engine rpm while at idle does your vacuum fluctuate? Give me some more info and I can help you out.
#5
Tony Stewart Killer.
iTrader: (12)
Re: Blown Motor?!
Originally posted by mor
Anyways, after the run I pulled over and everything seemed ok. I then revved the engine in neutral to about 2500 rpm and it now fluctuates with a steady rhythm like 2500-2250-2500-2250 and so on. It does this at all levels of rpm above 2500 rpm.
Anyways, after the run I pulled over and everything seemed ok. I then revved the engine in neutral to about 2500 rpm and it now fluctuates with a steady rhythm like 2500-2250-2500-2250 and so on. It does this at all levels of rpm above 2500 rpm.
#6
Full Member
Thread Starter
Join Date: May 2002
Location: Irvine, CA
Posts: 185
Likes: 0
Received 0 Likes
on
0 Posts
My idle is at about 900 rpm still and I have about 14 inhg vacuum. I have misfire at idle but I always have and people said it was normal and probably more noticeable since I have a street port.
Anyways, everything seems normal until I rev the car to 2500 rpm and hold it there it will fluctuate 2500-2200-2500-2200 repeatedly at a steady rate and the vacuum will fluctuate respectively.
I checked the MAP sensor last night and its still on there pretty tight.
Anyways, everything seems normal until I rev the car to 2500 rpm and hold it there it will fluctuate 2500-2200-2500-2200 repeatedly at a steady rate and the vacuum will fluctuate respectively.
I checked the MAP sensor last night and its still on there pretty tight.
Trending Topics
#10
Original Gangster/Rotary!
iTrader: (213)
Originally posted by r0t0r-rooter
A street port will lower the vacuum just a tad, depending on how agressive it is.
Damn Mor, I thought you had just rebuilt your motor by yoruself, too
A street port will lower the vacuum just a tad, depending on how agressive it is.
Damn Mor, I thought you had just rebuilt your motor by yoruself, too
Oh, and Mor: Are you holding the gas pedal steady but your rpms still fluctuate? How does the car drive otherwise? And if you're misfiring at idle that sure as **** *isn't* normal.....
#12
Full Member
Thread Starter
Join Date: May 2002
Location: Irvine, CA
Posts: 185
Likes: 0
Received 0 Likes
on
0 Posts
Yup, I hold the pedal steady at 2500 rpm and it will automatically fluctuate from 2500 to 2200 and back. Also happens at rpms higher than this if I hold the pedal.
This also occurs with load if I hold the pedal really steady.
This also occurs with load if I hold the pedal really steady.
Thread
Thread Starter
Forum
Replies
Last Post