NEED HELP sr20 warm up and breaking up issues - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

dmk477 · 02-28-2018, 05:42 PM

Whats up zilvia, so I have a red top sr20, on a cold start, the car will only remain running if I play with the throttle up until the engine is around NOT. Once the engine has reached temp, it idles fine and starts right back up as it should.

Also, under heavy acceleration the engine breaks up very bad. I am leaning towards the waste gate being inoperative, due to the fact that the boost gauge is is reading over 20lbs, while it is on the oem turbo and to my knowledge is on the factory map.

I have a 255 fuel pump to install and injector o-rings that were given to me with the car, so i was going to start there, but do not really feel as though they will solve my problems.

Any help is appreciated, thanks.

jedi03 · 03-01-2018, 08:42 AM

iacv, plugs, fpr...um ya check those and see where it goes!

dmk477 · 03-01-2018, 05:32 PM

Will do, the previous owner stated that he put new plugs in, maybe he gapped them incorrectly

***FaLKoN240*** · 03-01-2018, 06:44 PM

I would lean towards looking at what fuel pump is in there now.

dmk477 · 03-03-2018, 09:24 PM

I'm fairly certain that it's the factory pump from the ka. That's going to be the first thing that I do is change the pump. Unfortunately here in md we were hit with 60-70 mph winds yesterday and today so it's a scratch for this weekend.

nissansrdub · 03-04-2018, 09:48 PM

Might as well get those injector o-rings in since you got em. One more thing you can rule out.
Did you just get the car? How old is the gas?

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***FaLKoN240*** · 03-05-2018, 11:18 AM

A stock fuel pump will cause it to break up if it's old and the motor isn't getting enough fuel.

Properly support the fueling system then come back and ask questions.

dmk477 · 03-11-2018, 05:55 PM

LOL, so today I decided to go out and mess with the car a bit, a friend of mine gave me a manual boost controller to solve the the over boosting issue. As I am taking the inter cooler piping off I notice a GIANT hole in the intake piping. When the previous owner installed the intercooler and bov, he didn't plug the port for the old re-circ valve. Needless to say, the idle hunting and the fuel issues have now been resolved and its running properly.

nissansrdub · 03-11-2018, 10:14 PM

Another sr20 solved!

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dmk477 · 03-12-2018, 06:44 PM

yeah, but its burning a fair amount of oil after stomping on it

so hopefully it makes it through the season or until i can rb swap it. pray for me

mattrobertsxn · 03-14-2018, 12:46 PM

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02-28-2018, 05:42 PM	#1
dmk477 Join Date: Sep 2011 Location: Baltimore Age: 27 Posts: 37 Trader Rating: (1) Feedback Score: 1 reviews	NEED HELP sr20 warm up and breaking up issues Whats up zilvia, so I have a red top sr20, on a cold start, the car will only remain running if I play with the throttle up until the engine is around NOT. Once the engine has reached temp, it idles fine and starts right back up as it should. Also, under heavy acceleration the engine breaks up very bad. I am leaning towards the waste gate being inoperative, due to the fact that the boost gauge is is reading over 20lbs, while it is on the oem turbo and to my knowledge is on the factory map. I have a 255 fuel pump to install and injector o-rings that were given to me with the car, so i was going to start there, but do not really feel as though they will solve my problems. Any help is appreciated, thanks.

03-01-2018, 06:44 PM	#4
*FaLKoN240* Super Moderator Join Date: Jun 2004 Location: SF Bay Area Posts: 16,761 Trader Rating: (73) Feedback Score: 73 reviews	I would lean towards looking at what fuel pump is in there now. __________________ Best way to do business with me? Make your best offer FIRST.

03-05-2018, 11:18 AM	#7
*FaLKoN240* Super Moderator Join Date: Jun 2004 Location: SF Bay Area Posts: 16,761 Trader Rating: (73) Feedback Score: 73 reviews	A stock fuel pump will cause it to break up if it's old and the motor isn't getting enough fuel. Properly support the fueling system then come back and ask questions. __________________ Best way to do business with me? Make your best offer FIRST.

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03-01-2018, 08:42 AM	#2
jedi03 Nissanaholic! Join Date: Jul 2008 Location: albuquerque Posts: 1,786 Trader Rating: (8) Feedback Score: 8 reviews	iacv, plugs, fpr...um ya check those and see where it goes!

03-01-2018, 05:32 PM	#3
dmk477 Join Date: Sep 2011 Location: Baltimore Age: 27 Posts: 37 Trader Rating: (1) Feedback Score: 1 reviews	Will do, the previous owner stated that he put new plugs in, maybe he gapped them incorrectly

03-03-2018, 09:24 PM	#5
dmk477 Join Date: Sep 2011 Location: Baltimore Age: 27 Posts: 37 Trader Rating: (1) Feedback Score: 1 reviews	I'm fairly certain that it's the factory pump from the ka. That's going to be the first thing that I do is change the pump. Unfortunately here in md we were hit with 60-70 mph winds yesterday and today so it's a scratch for this weekend.

03-04-2018, 09:48 PM	#6
nissansrdub Zilvia Junkie Join Date: Apr 2007 Location: Denver Colorado Posts: 500 Trader Rating: (3) Feedback Score: 3 reviews	Might as well get those injector o-rings in since you got em. One more thing you can rule out. Did you just get the car? How old is the gas? Sent from my iPhone using Tapatalk

03-11-2018, 05:55 PM	#8
dmk477 Join Date: Sep 2011 Location: Baltimore Age: 27 Posts: 37 Trader Rating: (1) Feedback Score: 1 reviews	LOL, so today I decided to go out and mess with the car a bit, a friend of mine gave me a manual boost controller to solve the the over boosting issue. As I am taking the inter cooler piping off I notice a GIANT hole in the intake piping. When the previous owner installed the intercooler and bov, he didn't plug the port for the old re-circ valve. Needless to say, the idle hunting and the fuel issues have now been resolved and its running properly.

03-11-2018, 10:14 PM	#9
nissansrdub Zilvia Junkie Join Date: Apr 2007 Location: Denver Colorado Posts: 500 Trader Rating: (3) Feedback Score: 3 reviews	Another sr20 solved! Sent from my iPhone using Tapatalk

03-12-2018, 06:44 PM	#10
dmk477 Join Date: Sep 2011 Location: Baltimore Age: 27 Posts: 37 Trader Rating: (1) Feedback Score: 1 reviews	yeah, but its burning a fair amount of oil after stomping on it so hopefully it makes it through the season or until i can rb swap it. pray for me

03-14-2018, 12:46 PM	#11
mattrobertsxn Zilvia Member Join Date: Nov 2016 Location: Mission Viejo CA Age: 21 Posts: 209 Trader Rating: (2) Feedback Score: 2 reviews	Sent from my iPhone using Tapatalk