r0iand

I finished my turbo setup approximately a month ago. t3 super 60 on a y7. shaft play is minimal and car an good until yesterday.

Here is the story.

Car ran perfect up until this point.
Been running around 10psi for the past month on a John Vega tune. car has been running great. Starts right up n goes every day.

Well i went to start up yesterday afternoon and it took about 10-15 seconds before it would turnover. (battery STRONG along w/ starter. Thought it was kinda wierd so i proceeded to let the car warm up. Once warm took it for a test ride on the brand new drag radials. Well, car drove out of boost fine but then got above 6-8 psi it felt like it was breaking up really bad, (pulled nice for the few hundred RPM's til then). Thought it was the plugs. Put in new BKR7E, gapped them all to .032 and put new plug wires in hoping it would fix the problem. Nothing, still breaks up pretty bad up top passed like 7 psi. Any suggestions? I pressurized the system and got NO boost leaks either.

HELP!!!!!!!!!!

Thankyou in advance

coneheadsracing

What was it doing when it wouln't start?

Bad ground, bad fuel pump maybe, could be a couple of the things.

r0iand

i actually tried jumping my truck (05 silverado) w/ my car and when i went to start the truck it killed the cars power and it didnt have enough to start for about 2 minutes w/o me charging it. Could that have done sumthign to the ecu? im resetting the ecu w/ it unplugged and neg batt terminal off right now. lets see if this helps. thanx
roland

r0iand

its more the high RPM break up that is concerning me. it pulls okaaay, til like 5-6 psi then breaks up hardcore and power dies.

thomas@LPS

its more that like something timing realated. cap, rotor or something inside the dizzy.

97grnrs

head gasket going bad? ?

homemadeturbo

Try gapping down to .028-.030"

r0iand

ok so i went w/ my friend (derka) for a ride and he is a fairly knowledgable dude, my go-to guy for stuff. And we arent thinking its timing related, new plugs, new wires, reset ECU and still feeling kinda wierd. Well i went to charge my dead Chevy silverado up w/ my car, and it shut the car down when i went to turn it over. I havea feeling that this may have done something to my OEM fuel pump which is still original w/ 155k miles on it. I am going to replace w/ a walboro asap...will this change my tune? Im on a Vega Dyno tune.

Car USED to crank right over, because the OEM honda pumps tend to hold pressure unlike a walboro. So i am thinking that the fuel pump might slowly but surely be taking a POOP on me. hence the startup time increase and break up @ high RPM. Let me know how you all feel about this. I'm going to replace either way....and THANKYOU for all of your fast responses

-roland

r0iand

any reason for the smaller gapping? lmk, because i am goign to compression test right now, and i'll just do it while i'm out there.

95dc2teg

smaller gap = less chance of spark blow out, plus im pretty sure vega gaps all his plugs to .028 anyways.

to John Vega and his tuning skills just because!

r0iand

Compression of <U>90</U> across the board??????? car runs perfect til about 6psi+
Could it be fuel pump? i havea feeling it is. im goign to go pick up a walboro tomorrow

homemadeturbo

Did you gap your plugs yet? It's free fool

r0iand

yea plugs gapped to .028

Chris22215

how did you do the compression test? Did you hold the throttle open and let it turn over a couple of times? if it's really 90psi, then that's a problem in itself.


Modified by Chris22215 at 3:55 PM 12/10/2007

hondacivic00

I'm worried for you because you say that you have been consistently been running 10psi on the STOCK FUEL PUMP?!? You might be able to get away with 5psi MAX on the stock pump from my experience.

I would to a compression test/leak down test to see if you haven't damaged something by leaning out.

Are you running any type of A/F monitor or guage?? Do you have injectors or are you running the stock ones still??

Did your tuner really tune your car for 10psi on the stock pump and/or stock injectors?? That's really scarry stuff if that is the case.

Hopefully you haven't done some irreversible damage.

Good luck!!

thomas@LPS

my stock d16z6 9.2-1 compression ratio tested a 205psi. somethings not right there. if a/f's are not being watched it seems that this thing may be hurt due to lack of fuel..

95dc2teg

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hondacivic00 &raquo;</TD></TR><TR><TD CLASS="quote">
Did your tuner really tune your car for 10psi on the stock pump and/or stock injectors?? That's really scarry stuff if that is the case.

Hopefully you haven't done some irreversible damage.

Good luck!!</TD></TR></TABLE>

doubt that is the case. Vega is not "incompetant" , he would NEVER tune a car with stock injectors or fuel pump for 10psi.....

coneheadsracing

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hondacivic00 &raquo;</TD></TR><TR><TD CLASS="quote">I'm worried for you because you say that you have been consistently been running 10psi on the STOCK FUEL PUMP?!? You might be able to get away with 5psi MAX on the stock pump from my experience.

I would to a compression test/leak down test to see if you haven't damaged something by leaning out.

Are you running any type of A/F monitor or guage?? Do you have injectors or are you running the stock ones still??

Did your tuner really tune your car for 10psi on the stock pump and/or stock injectors?? That's really scarry stuff if that is the case.

Hopefully you haven't done some irreversible damage.

Good luck!!</TD></TR></TABLE>

You guys need to remember this is a y7. Realizing that 10 psi is different from turbo to turbo, i ran 10 psi on stock injectors with my y7 with no issues. Wideband was always fine. Not saying he isn't having fuel pump issues, just saying that you could do it.

With this starting after you jumped your truck, i'd say it has something to do with that. Why did your car die, i realize the truck is gonna pull some power, but i don't see it killing the car. Did you have the cables hooked up backwards. Try swapping dizzy's with someone.

r0iand

I am running the stock fuel pump, but w/ 450cc DSM injectors. I just bought a Walbro fuel pump. I'm going to try to try the compression test again w/ a friend here for moral support, lol

I also hope there is no irreversible damage, the new Walbro fuel pump should be installed tonight. Hopefully this will help my problem.... lets hope for the best!

r0iand

WELL WELL WELL&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;&gt;

Problem Solved.... Stock fuel pump took a **** on me.... Walbro is sex right now!

Re-compression tested @ 176, 180, 180, 178 all smiles.... i guess the AUTOZONE guage DOESN'T hold the highest Pressure. st @ like 90 so when i was by my self, when i got outa the car to look, was 90 psi... POS AUTOZONE

ADVANCED AUTO PARTS FTW

again, thank you all !!! for your input and concern, and happy hondaing!?!