Looses power/ won't rev past 5500 rpm's
#1
Teching In
Thread Starter
iTrader: (12)
Join Date: Mar 2006
Posts: 20
Likes: 0
Received 0 Likes
on
0 Posts
Looses power/ won't rev past 5500 rpm's
Motor is stock and swapped into my RX-7. I installed a LS2 timing chain, Melings oil pump and underdrive pulley.
Now the motor looses all power at 5500 rpm's. It is kinda acting like it is hitting rev limiter. Other than that is seems to run fine, idles smooth, revs smooth and has power. I was very careful to make sure nothing moved when I installed the new chain but could it be a tooth off? What would it run like?
Any other ideas what could be wrong?
Now the motor looses all power at 5500 rpm's. It is kinda acting like it is hitting rev limiter. Other than that is seems to run fine, idles smooth, revs smooth and has power. I was very careful to make sure nothing moved when I installed the new chain but could it be a tooth off? What would it run like?
Any other ideas what could be wrong?
#2
Staging Lane
iTrader: (1)
Join Date: Jun 2007
Location: Philadelphia
Posts: 53
Likes: 0
Received 0 Likes
on
0 Posts
Sounds completely fuel related. What fuel pump are you using ?? If the motor is stock then the stock size injectors and rails are plenty just take them apart and clean them (injectors) or buy new ones. Do you ever get a long cranking time?
>>Check fuel pump/clean injectors>>
good luck
>>Check fuel pump/clean injectors>>
good luck
#3
Teching In
Thread Starter
iTrader: (12)
Join Date: Mar 2006
Posts: 20
Likes: 0
Received 0 Likes
on
0 Posts
Forgot to mention I thought is was a fuel pressure issue that turned out to be a bad gauge. I replaced fuel pump and FPR. Should be getting a solid 58 PSI.
I did have an issue with a blocked return line and this caused me to have 90 psi, could this have damaged the injectors?
I did have an issue with a blocked return line and this caused me to have 90 psi, could this have damaged the injectors?
#4
TECH Enthusiast
Join Date: Jul 2006
Location: San Diego
Posts: 638
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by Wickedone
Forgot to mention I thought is was a fuel pressure issue that turned out to be a bad gauge. I replaced fuel pump and FPR. Should be getting a solid 58 PSI.
I did have an issue with a blocked return line and this caused me to have 90 psi, could this have damaged the injectors?
I did have an issue with a blocked return line and this caused me to have 90 psi, could this have damaged the injectors?
Trending Topics
#9
TECH Enthusiast
Join Date: Jul 2006
Location: San Diego
Posts: 638
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by Wickedone
I was extremely careful to make sure the timing chain was lined up but you never know. It there any way to check it without pulling it all apart?
#10
Teching In
Thread Starter
iTrader: (12)
Join Date: Mar 2006
Posts: 20
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by GOaT Cheese
Use a piston stop and mark an exact TDC mark somewhere on the front cover and balancer.
#11
TECH Enthusiast
Join Date: Jul 2006
Location: San Diego
Posts: 638
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by Wickedone
What is a piston stop? This sounds a heck of a lot easier than pulling the entire front of the motor apart.