RX7Club.com - Mazda RX7 Forum

RX7Club.com - Mazda RX7 Forum (https://www.rx7club.com/)
-   General Rotary Tech Support (https://www.rx7club.com/general-rotary-tech-support-11/)
-   -   Weird starting condition after rebuild!!!!!! (https://www.rx7club.com/general-rotary-tech-support-11/weird-starting-condition-after-rebuild-1140600/)

Kylet1991 12-01-19 08:48 PM

Weird starting condition after rebuild!!!!!!
 
Hello everyone, I'm going to just start off by saying thank you in advance to anyone who has positive input in this post.

And now for the car
94 fd
Apexi power fc with commander (no datalogit) and the car ran on this ecu before rebuild
Single gt45r 67mm with .90ar hot side
greedy profec b2 boost control
Single 44mm wastegate
3in down pipe to 4in exhaust
Roarty works v-mount intercooler and radiator
Stock fuel suetup94 550/850
Pineapple racing large street port housings and irons
Adkins roarty ceramic apex seals
and OEM mazda rotor bearings and stationary gear bearings
all Adkins roarty rebuild parts
deleted the omp and running premix

Ok so here goes about a month ago I completed the rebuild of my engine with all new parts and port job side seals set to .0025 to corner seal for boost application. Everything went together wonderfully had new bearings put in all around. Tested compression before trying to start and 85psi on all faces of both rotors

Fast forward to engine being in the car wouldn't start so with a slight pull down the road about 100 feet fired up , the car was very upset spitting and popping so I didn't let it run long as it was late and I have Neighbors that hate my car lol.
so next day went out and turned the key and right away the car started great. I back in to the drive way so I can let the car heat up and burp the system and adjust Idle and well that lasted about 5 minutes and I noticed that my fans were unplugged so shut off the car fixed the problem and started again I got the car to idel ok and thought I burped the coolant but had to leave. As I work out of town during the week.

Next weekend the car will not start by way of key but easily by pull start. So I start going through all the basics fuses fuel air spark all check out.
fuel pressure 39psi
Spark strong on all coils I'm lost at this point. So I proseed with the deflood Procedure pull all plugs and egi,
gas pedal WOT and crank about 10 seconds and repeat about 5-6 times.
pull UIM put about a tlb of oil in to the intake runners bump starter and repeat 2 more times.
While UIM is off with plugs back in and egi installed i but the starter and the engine starts i instantly kill it and complete the assembly of everything and try and start the car nothing.
I do this about 2 more times and it starts and idles for about 2 minutes and dies.
now it will not even do that but today I spread a small amount of starting fluid in the LIM and the car fired right up put it back together and it started right away then died :burn:
I also did a pressure test on my fuel rails they hold pressure so no open injectors and I also pressure tested the coolant system holds 15psi.

I am completely lost only thing I can think is I may have been way over generous with my premix as I used about half a bottle and only had about 1/4 tank or less. Would that gumb up the injectors? I am so lost and open to any and all help thanks again


All times are GMT -5. The time now is 03:04 AM.


© 2024 MH Sub I, LLC dba Internet Brands