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Yesterday I started and did the initial break in of my rebuilt motor (325 Dodge Hemi. )
I ran it at about 2500rpm for 20minutes.
Brought it down to idle (about 700rpm ) and set the timing (to about 12btdc ) and adjusted the idle screws.
I was not happy...
Started by ThomasD500 on
, 37 posts
by 13 people.
Answer Snippets (Read the full thread at forwardlook):
Well at about 700 TRUE ....
In fact, it should make the most vacuum it will ever make now.
If the idle comes up it's a vacuum leak idle like that with new rings.
Use a can of WD40 and spray all of the gasket areas .
And intake.
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The vacuum line problem is fixed and now I just have the idle issue.
I have a bouncing idle problem in the 1000-1500 range. The TPS has been adjusted. When started it idles at 2000 RPM and then when it goes to step down it starts the idle bounce when ...
Started by Nukem987 on
, 25 posts
by 4 people.
Answer Snippets (Read the full thread at probetalk):
I think its the tps in mine cuz wen ... .
The vacuum routing diagram is the wrong one thats for a 93-95 you need the one for a 96 - 97 is differant then what it supposed to be does that im have a vacuum port on runner #5 next to the pcv port.
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So is this normal or is this a vacuum leak. -20hg idle and when I left of the accelerator while driving its -30hg (max on guage)
cheers
Started by golfgtiturbonutter on
, 4 posts
by 3 people.
Answer Snippets (Read the full thread at uk-mkivs):
Mine sits -20hg when on idle when stationary, if I'm driving and take my foot off completely then it will....
And it will be higher when during lift off due to the engine running higher vacuum when the revs drop -30hg seems too high to me.
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I was digging through the service manual and I can't find anywhere that shows what the idle vacuum should be on a healthy I-4 chargecooled motor.
any of you with aftermarket vacuum/boost gauges know?
I measured mine and I it's only pulling 10" Hg. That...
Started by QuadCam on
, 7 posts
by 5 people.
Answer Snippets (Read the full thread at lotustalk):
The vacuum off your....
That same reading, I think its normal, about 10 in on the vacuum gauge normal.
I think 10" is about normal for a late model 4 cyl Esprit a while back I found approx .
To check for vacuum leaks, mine had a bunch.
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I think i have a vacuum leak. my boost/vacuum gauge shows about 9, maybe 10 mm Hg. i am pretty sure it was more like 12 to 15 just last week. also, the AFM reads 16:1 at idle, i know that isn't what i want and that reading was more like 14.4:1 last week...
Started by nynor on
, 8 posts
by 3 people.
Answer Snippets (Read the full thread at pelicanparts):
Start with the....
However is fairly lean.
16 to the DME, it will idle at about 15:1 on the AFM and the vacuum creeps up to about 12.
Your AFR indicates a vacuum leak also, should be bouncing around 14.7afr at idle..
In-hg hot.
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I just purchased dashcommand and a gopoint bt1 and the boost/vacuum gauge shows -0,7 bar or 18,00 inHg on idle and around -0,3bar on cruising speed at 2500 rpm. when i put the pedal to the metal it shows the correct 1,3 bar its mapped
do the readings ...
Started by yallahyimshi on
, 3 posts
by 3 people.
Answer Snippets (Read the full thread at subaruforester):
Mine shows around 18,00 inHg on idle as well, and quite often reads below 0 as i try to drive off.
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Ok guys, I read some threads about VACUUM.
My car reads on my 30/30 about 15-16 in hg, and my scanguage reads about 17-18 at IDLE.
Now Ive boost leak tested my car up to 23psi-25 and found no leaks around any lines that are zip tied or pipes. But never...
Started by theRTguy on
, 4 posts
by 3 people.
Answer Snippets (Read the full thread at srtforums):
So does....
I live in Pa altitude is 1400ft.
Now Ive boost leak tested my car up to 23psi-25 and found .
My car reads on my 30/30 about 15-16 in hg, and my scanguage reads about 17-18 at IDLE.
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I tried the carb cleaner test around the throttle body and pcv connections. i took off the brake booster line and it looked fine.
so a few questions here
what is this tube that i have removed? not a vacuum line correct? i ran engine without it and no ...
Started by BadBirdie on
, 3 posts
by 2 people.
Answer Snippets (Read the full thread at ls1tech):
Pic 2) Thats the intake vacuum....
That solenoid opens and closed when needed at WOT.
Pic 2) Thats the intake vacuum port to suck the fuel solenoid that should attach to that fuel vacuum port.
Pic 1) Thats the suction port from the TB at WOT .
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2000 Dodge Neon, manual if that matters.-
My wife was driving home and the car started to idle extremely rough (her words), so she ended up pulling over and calling for a tow home. Based on what I had read it seemed likely to be a vacuum related problem...
Started by zooostar on
, 6 posts
by 5 people.
Answer Snippets (Read the full thread at neons):
You can get these aftermarket, or at the dealer if they... .
If these tear, it can cause that issue.
I would look here.
(Grease one end of it.)
Stick that end up to your ear,
and use the hose like an antenna to find the leak sound .
Grab a yank of heater hose.
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My car logs high 70s low 80s on the map sensor at idle. While coasting in gear it's down around 50s...engine is 12:1 434ci with a 262/266 624 624 cam. Is this normal for a cam that big?
Started by Snyper on
, 6 posts
by 4 people.
Answer Snippets (Read the full thread at ls1tech):
Big overlap creates almost no vacuum at ....
I have a very similiar motor with about the same size cam and mine is around 80 kpa on the data log at idle.
I'm sorry vacuum at idle according to map is 85-89kpa Maybe a little low.
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