so before i left work i allowed my teg to warm up for about 10 minutes like i usually do... i left work and went straight home and when i got home i popped my hood as the car was cooling down with the turbo timer, and the #4 cylinder tube was beginning to glow red... everything sounds fine, the a/f gauge says its running just a little rich, the engine is a b18b1 thats fully built and the bottom end was assembled at JG Engine dynamics... but heres the thing, only that one tube had a very faint red glow that went away as the turbo timer was allowing it to cool, and i didnt even beat on the car at all the whole way home, in fact i didnt even go over 60mph... any ideas??? im real paraniod because the last time it did that i had a spun rod bearing...

 

maybe that cylinder leaned out , bad injector or something would be my guess

 

so heres a little update... since i spun my last bearing i decided to get a magnetic oil drain plug... since i gave the car a little while to cool down i went out and pulled the plug quick the check it and there was nothing on it... so the bearings are fine... as i started looking around i noticed on the intake manifold its discolored in a line right below the cylinder #4's fuel injector so i think its leaking...

 

cruising usualy has higher egts due to being more towards the lean side its probly nothing to worry about but do at least check your plugs to confirm that cylinder isn't lean compared to the others

 

bearing material isnt magnetic so its not going to stick to your drain plug.

 

it stuck to a magnet last time i spun a bearing....

 

I'd say it's normal except for the fact that it's only one runner. My manifold is always glowing after cruising on the highway.
What style manifold do you have?

Do like the other guy said and pull the plugs, see what the deal is.

 

my fully built motor **** the bed on the dyno cause of a failed injector.

After that I sent the injectors out to be tested/cleaned and it came back that the one injector flowed 13% less, and it caused that cylinder to lean out and get too hot, result....blown motor.

I would maybe take the injectors off and send them out to be cleaned/tested. Its not too expensive. Hope you got a daily beater!!

 

what engine management you using? who tuned the car? what is the timing at idle? i have seen this happen on a couple cars due to too much timing being pulled in various areas. causing the combustion to occur later in the cycle and more towards the exit of the head and toward the turbo manifold. resulting in a glowing manifold

you see this alot with DSMs and stock ecus(AFC setups usually)

 

Check the plug in that cylinder as well. Compare it to the rest of them. That will give you an idea of whats going on. It does sound like it's running lean!

 

Having your timing retarded to much can cause high egt temps, what does your timing tables look like?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ls19integra95 &raquo;</TD></TR><TR><TD CLASS="quote">so heres a little update... since i spun my last bearing i decided to get a magnetic oil drain plug... since i gave the car a little while to cool down i went out and pulled the plug quick the check it and there was nothing on it... so the bearings are fine... as i started looking around i noticed on the intake manifold its discolored in a line right below the cylinder #4's fuel injector so i think its leaking...</TD></TR></TABLE>

That'll do it.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mrbsponge &raquo;</TD></TR><TR><TD CLASS="quote">what engine management you using? who tuned the car? what is the timing at idle? i have seen this happen on a couple cars due to too much timing being pulled in various areas. causing the combustion to occur later in the cycle and more towards the exit of the head and toward the turbo manifold. resulting in a glowing manifold

you see this alot with DSMs and stock ecus(AFC setups usually)</TD></TR></TABLE>

This is a very good point.

Ret. timing at mid and low load can have a noticeable impact on how hot your manifold gets, your under-hood temperatures as well as coolant temp.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hondakid94 &raquo;</TD></TR><TR><TD CLASS="quote">bearing material isnt magnetic so its not going to stick to your drain plug.</TD></TR></TABLE>

Duh...everybody knows bearings are made of plastic.

 

back years ago when I had a inline pro manifold when they first came out. Whenever I bet on my car the wastegate area glowed red. Nothing ever came from it. I figured cause i beat the crap out of it, did a gumball race once and it glowed as well. avg speed was 120mph.

 

will a magnet even pick up bearing material?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by blinx9900 &raquo;</TD></TR><TR><TD CLASS="quote">will a magnet even pick up bearing material?</TD></TR></TABLE>

No, but how does a spun bearing make a manifold glow anyway?

 

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

No, but how does a spun bearing make a manifold glow anyway? </TD></TR></TABLE>

the bearing want to get out

 

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

the bearing want to get out</TD></TR></TABLE>

lmao

any way, yah that cylinders injectors leaking a little so im going to fix that, ill check the plugs tomorrow morning along with checking the timing... today i used the car to go a short distance to work and then home again, i checked the manifold when i got there and when i got home and nothing, wasnt red at all either time... but just so that i know exactly what im looking for with the plugs, how would it look if its running lean compared to running rich?

 

The point is there is always alot of **** on a magnetic drain plug when bearings go. I dont care if that is from the bearing or the crank/rod material. Its the canary in the mine that you can use it as a health indicator.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ls19integra95 &raquo;</TD></TR><TR><TD CLASS="quote">

lmao

any way, yah that cylinders injectors leaking a little so im going to fix that, ill check the plugs tomorrow morning along with checking the timing... today i used the car to go a short distance to work and then home again, i checked the manifold when i got there and when i got home and nothing, wasnt red at all either time... but just so that i know exactly what im looking for with the plugs, how would it look if its running lean compared to running rich?</TD></TR></TABLE>


does the injector leak under vacuum or under boost? do you hear a sucking noise when it is idling? mine would blow gas out of it under heavy boost when the seal was bad in mine. if its leaking that bad like it is being described i wouldnt even be driving it my buddy

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Muckman &raquo;</TD></TR><TR><TD CLASS="quote">The point is there is always alot of **** on a magnetic drain plug when bearings go. I dont care if that is from the bearing or the crank/rod material. Its the canary in the mine that you can use it as a health indicator.</TD></TR></TABLE>
shoe got it

 

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


does the injector leak under vacuum or under boost? do you hear a sucking noise when it is idling? mine would blow gas out of it under heavy boost when the seal was bad in mine. if its leaking that bad like it is being described i wouldnt even be driving it my buddy</TD></TR></TABLE>

im pretty sure its just under boost because its not leaking when i get to work or while its idle or anything... so im pretty sure its just when its under boost, but im going to be changing that seal soon...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ls19integra95 &raquo;</TD></TR><TR><TD CLASS="quote">it stuck to a magnet last time i spun a bearing....</TD></TR></TABLE>

Thats because the bearing were worn enough to eat through the backing. Bearings are made of copper/lead (like ACL) or alumninum in some cases, with a steel backing. I had a Y7 that I bought from the user K_Motor w/o knowing 2 mains were shredded and 3 rods were bad, it had loads of non-magnetic flakes (dime to silver dollar sized) all over.

You should check the plugs to see exacly what each cylinder looks like under boost. #4 looks terribly lean vs the other 3, then you know there's a major problem. I would definately never run a turbo motor w/o good, working injectors.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ls19integra95 &raquo;</TD></TR><TR><TD CLASS="quote">

lmao

any way, yah that cylinders injectors leaking a little so im going to fix that, ill check the plugs tomorrow morning along with checking the timing... today i used the car to go a short distance to work and then home again, i checked the manifold when i got there and when i got home and nothing, wasnt red at all either time... but just so that i know exactly what im looking for with the plugs, how would it look if its running lean compared to running rich?</TD></TR></TABLE>


Don't worry about looking for anything specific. If that plugs looks significantly different than the rest of them then that cylinder has a problem.