95 intake and TB to eliminate EGR & associated vac lines
I was having issues with my 92 OBD I harness (the engine started and ran well but I was burning out fuel pump relays and the cel light never came on, still don't understand why) so I decided to start over and go 97 OBD II since I had most of the parts already.
I got it far enough to test start, fuel pump had gone out (89 SPFI fuel pump).
Again, I decided to upgrade. Installed 7psi supply pump with inline prefilter, homemade surge tank, 45psi injection pump, 10m injection filter, 5/16" 30R9 hose.
Before starting I primed the fuel and oil systems. Engine spun fine with injectors/ignitor unplugged. Fuel system shows 36psi at engine inlet, right on FSM spec.
When I plug in the injectors and ignitor the engine seems hard to turn and sputters then when it fires it pops and seems to wants to spin back. Does not want to start.
I thought timing, maybe bad CAS which were changed to OBD II style, so I replaced both the crank and cam angle sensors with spares. No effect.
I'm lost and I dont have tons of time for this. I've been getting very discouraged after working for so long and still not having my EJ swap done. If anyone could help me diagnose this and get this thing running again I'd really appreciate it.
I didn't touch any engine related wires in the harness except to remove the egr. I'm using the whole 97 leg harness, too - no brat wiring left.
My surge tank, welded 1/8" steel
Looking in driver's taillight hole, yes it barely fits. I didn't realize how large the brass fittings would end up till after welding the top and bottom. I shoulda went 10" instead of 12" tall. Grey stuff is fuel tank epoxy holding fuel temp sensor in a bung plug.
Looking in rear driver's access hole. Cover panel still fits, no interference from bolt heads.
Surge tank hoses go through body behind driver's step thing.
10m injection filter on homemade 2"x 3/16" angle mount
Fuel lines under hood. I used the vent hardline from engine bay to under bed as my return to the surge tank and the original return line on main tank for low pressure return from surge tank.
Edited by mountaingoatgruff, 16 June 2012 - 07:34 PM.