Sr20 breaking up under load - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Liam pink · 08-15-2020, 04:54 PM

My sr20de plus t will free revv fine but as soon as it sees load and boost it will break up heaps and cough and splutter. I have changed plugs multiple times have had coils tested and came up okay (although sometimes it doesnt mean anything as they arent tested when hot etc) i have also done a new coil loom and had injectors cleaned. Still has the same problem. Will likely source some different coils and see if that fixes it but has anyone got any other ideas?

nisileighty · 08-15-2020, 05:05 PM

I have the same issue. Check your ignition timing

zombiewolf513 · 08-15-2020, 05:09 PM

Have a blow off valve? Could be loose and blowing open under boost. Been there done that

oewoko · 08-15-2020, 05:14 PM

I had this problem. For me, it was the coilpacks. At first , I wrapped them with electrical tape, which helped. The old coil packs can arc to the valve cover. I am now running qr25de coil packs, and wrapped for extra measure. The car starts so much easier, and runs smoother

Sent from my SM-N910V using Tapatalk

Liam pink · 08-15-2020, 06:52 PM

Quote:

Originally Posted by zombiewolf513

Have a blow off valve? Could be loose and blowing open under boost. Been there done that

It does but ive tried it both connected and not connected and hasnt nade a difference

Liam pink · 08-15-2020, 06:52 PM

Quote:

Originally Posted by oewoko

I had this problem. For me, it was the coilpacks. At first , I wrapped them with electrical tape, which helped. The old coil packs can arc to the valve cover. I am now running qr25de coil packs, and wrapped for extra measure. The car starts so much easier, and runs smoother

Sent from my SM-N910V using Tapatalk

Cheers. Ill prob get some different sr coils or do yaris coils

Liam pink · 08-15-2020, 06:53 PM

Quote:

Originally Posted by nisileighty

I have the same issue. Check your ignition timing

Likely taking it to a tuner soon anyway so ill get them to look at that aswell

S14rebuild · 08-16-2020, 09:14 AM

sr20de and u added a turbo?

Or sr20det

If its the first you will need tuning for it to run proper

zombiewolf513 · 08-16-2020, 10:30 AM

^that

Quote:

Originally Posted by Liam pink

It does but ive tried it both connected and not connected and hasnt nade a difference

Mine was a Tial so it was the mechanical spring weight blowing open connected or disconnected. I had to change the spring to a heavier one to fix it. Figured it out by removing it and wrapping the pipe with ductape for a test run. Definitly dirty but it works

Liam pink · 08-16-2020, 06:25 PM

Quote:

Originally Posted by S14rebuild

sr20de and u added a turbo?

Or sr20det

If its the first you will need tuning for it to run proper

De+t man. Added turbo. Been tuned on link g4

S14rebuild · 08-16-2020, 06:32 PM

Its been tuned...

Check for boost leaks

Liam pink · 08-16-2020, 10:31 PM

Quote:

Originally Posted by S14rebuild

Its been tuned...

Check for boost leaks

No boost leaks.

zombiewolf513 · 08-17-2020, 02:05 AM

Sparkplug condition and gap

TheBlackHand · 08-24-2020, 11:31 AM

Quote:

Originally Posted by nisileighty

I have the same issue. Check your ignition timing

Can you clear your inbox? Trying to send you a message.

inopsey · 08-24-2020, 03:03 PM

when was the last time you maintained/inspected your fuel system? ie) changed the filter? how many miles on the fuel pump/is the fuel pump original for the car?

S14rebuild · 08-24-2020, 05:42 PM

Op hasnt been on since the 17th....guess hes not to concerned.....

08-15-2020, 04:54 PM	#1
Liam pink Join Date: Feb 2020 Location: Nz Posts: 19 Trader Rating: (0) Feedback Score: 0 reviews	Sr20 breaking up under load My sr20de plus t will free revv fine but as soon as it sees load and boost it will break up heaps and cough and splutter. I have changed plugs multiple times have had coils tested and came up okay (although sometimes it doesnt mean anything as they arent tested when hot etc) i have also done a new coil loom and had injectors cleaned. Still has the same problem. Will likely source some different coils and see if that fixes it but has anyone got any other ideas?

08-16-2020, 09:14 AM	#8
S14rebuild BANNED Join Date: May 2019 Location: Florida-FAIL Posts: 2,497 Trader Rating: (8) Feedback Score: 8 reviews	sr20de and u added a turbo? Or sr20det If its the first you will need tuning for it to run proper Last edited by S14rebuild; 08-16-2020 at 04:31 PM..

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08-15-2020, 05:05 PM	#2
nisileighty Zilvia FREAK! Join Date: Feb 2016 Location: Seattle, WA Posts: 1,215 Trader Rating: (4) Feedback Score: 4 reviews	I have the same issue. Check your ignition timing

08-15-2020, 05:09 PM	#3
zombiewolf513 BANNED Join Date: Mar 2011 Location: AZ Age: 33 Posts: 1,682 Trader Rating: (6) Rides Gallery: zombiewolf513 Feedback Score: 6 reviews	Have a blow off valve? Could be loose and blowing open under boost. Been there done that

08-15-2020, 05:14 PM	#4
oewoko Zilvia Member Join Date: Apr 2002 Location: new jersey Posts: 154 Trader Rating: (2) Feedback Score: 2 reviews	I had this problem. For me, it was the coilpacks. At first , I wrapped them with electrical tape, which helped. The old coil packs can arc to the valve cover. I am now running qr25de coil packs, and wrapped for extra measure. The car starts so much easier, and runs smoother Sent from my SM-N910V using Tapatalk

08-16-2020, 06:32 PM	#11
S14rebuild BANNED Join Date: May 2019 Location: Florida-FAIL Posts: 2,497 Trader Rating: (8) Feedback Score: 8 reviews	Its been tuned... Check for boost leaks

08-17-2020, 02:05 AM	#13
zombiewolf513 BANNED Join Date: Mar 2011 Location: AZ Age: 33 Posts: 1,682 Trader Rating: (6) Rides Gallery: zombiewolf513 Feedback Score: 6 reviews	Sparkplug condition and gap

08-24-2020, 03:03 PM	#15
inopsey Nissanaholic! Join Date: Jul 2008 Location: canada Posts: 1,665 Trader Rating: (21) Feedback Score: 21 reviews	when was the last time you maintained/inspected your fuel system? ie) changed the filter? how many miles on the fuel pump/is the fuel pump original for the car?

08-24-2020, 05:42 PM	#16
S14rebuild BANNED Join Date: May 2019 Location: Florida-FAIL Posts: 2,497 Trader Rating: (8) Feedback Score: 8 reviews	Op hasnt been on since the 17th....guess hes not to concerned.....