#1 |
Here's the story so far...
Finally got the engine in, sensors hooked up, vac hoses going where they need to go etc... First time I attempted to start the car I got absolutely nothing. It would crank fine, but it wasn't trying to start at all. It was 4 in the morning by this point so I stopped working for the day.
Next day for s**ts and giggles I tried to start it again and this time it sounds like a single cylinder is firing. So that night I did some testing.
I confirmed all cylinders had spark. FP was 42 at the rail with the pump running and 38-39 right after shutting it off. After being off about an hour FP was still reading about 25 if I remember correctly. So at this point I'm thinking either the injectors are not firing at all or are clogged. I cranked the engine for about 10 seconds and then pulled the plugs and found that cylinders 1, 3, &4 were bone dry while cylinder 2 was definitely getting fuel. I realize I should have had them cleaned while I was building the motor, but I didn't so my best guess is that 3 were completely clogged. I switched them out with 3 different ones and then it would start up... briefly.
When I would crank it it started up right away every time. It would stay running (rough) for about 3 seconds and bog down and shut off. So I played with the timing a bit. I kept retarding it and every time it would run a little better. At this point I can get it stay running (though not smoothly at all) if I retard the timing to about 30-degrees btdc. While running I went to advance it back to 10 (spout disconnected) and it would bog and shut off at around 20-degrees btdc.
So that's where I am at now. The upper portion of the timing belt cover was broken off long ago so I initially used the string method of cam timing. When the belt is tight everything lines up perfectly. Only thing is I bought this engine already rebuilt from a guy off this board so I don't know exactly what was done to it when he got the machine work done. I'm thinking at this point that perhaps the cam could be off by a tooth or 2?? Any ideas or suggestions?
Finally got the engine in, sensors hooked up, vac hoses going where they need to go etc... First time I attempted to start the car I got absolutely nothing. It would crank fine, but it wasn't trying to start at all. It was 4 in the morning by this point so I stopped working for the day.
Next day for s**ts and giggles I tried to start it again and this time it sounds like a single cylinder is firing. So that night I did some testing.
I confirmed all cylinders had spark. FP was 42 at the rail with the pump running and 38-39 right after shutting it off. After being off about an hour FP was still reading about 25 if I remember correctly. So at this point I'm thinking either the injectors are not firing at all or are clogged. I cranked the engine for about 10 seconds and then pulled the plugs and found that cylinders 1, 3, &4 were bone dry while cylinder 2 was definitely getting fuel. I realize I should have had them cleaned while I was building the motor, but I didn't so my best guess is that 3 were completely clogged. I switched them out with 3 different ones and then it would start up... briefly.
When I would crank it it started up right away every time. It would stay running (rough) for about 3 seconds and bog down and shut off. So I played with the timing a bit. I kept retarding it and every time it would run a little better. At this point I can get it stay running (though not smoothly at all) if I retard the timing to about 30-degrees btdc. While running I went to advance it back to 10 (spout disconnected) and it would bog and shut off at around 20-degrees btdc.
So that's where I am at now. The upper portion of the timing belt cover was broken off long ago so I initially used the string method of cam timing. When the belt is tight everything lines up perfectly. Only thing is I bought this engine already rebuilt from a guy off this board so I don't know exactly what was done to it when he got the machine work done. I'm thinking at this point that perhaps the cam could be off by a tooth or 2?? Any ideas or suggestions?
Brian Leavitt
'86 TC 5-Speed -- MS2x w/COP | 83 lb. injectors | T3/T4 50 Trim Stage 3 .63AR | Full 3" Exhaust - No Cat | Motorsport FMIC | Ranger Roller | Ported E6 | Walbro 255HP | Kirban | 20psi | 120-amp 3G | 8.8" 3.55 rear | '03 Cobra Wheels