Ran them a la 76 Vette- down behind the heads, to the oil pan, and forward along the oil pan rails, held by Addel clamps. Used Accel ratchet crimper, Accel 8mm wire, and jacketed them in antichafe/heat protective fiberglass/silicone material. Plug Wires are new, and very protected (due to manifolds and packaging, I had to make my own wires. Plugs are new (Autolite, no "trick pony" plugs here) Coil has been relocated to the firewall, due to interference from the oil pressure switch (and tap for bypass filter). This actually improved the situation for a while, but the problem is creeping back. Coil harness is new (connectors were broken so I replaced the 2-wire connection to the ign module as well as both connections to the coil. FPR is new, replaced when I pulled the TB and installed new injectors. I assume the FPR is doing its job and regulating pressure down. Fuel pump is new, TPI unit as advised by a member here to ensure fueling for future mods (TPI pump puts out in the neighborhood of 50PSI, TBI needs about 15, as I'm sure you guys know). Pattern is fine, though I can't say they aren't delivering too much fuel. I am using the correct injectors (in fact they are about a year old). Also, it will occasionally backfire through the exhaust, but I think that is to be expected with a misfire/stumble. ![]() Occasionally it will cut out- sometimes at idle, sometimes while cruising, though that is quite rare. Sitting at idle at a light, I can feel the truck shake now and then, I assume this is a misfire. I haven't been able to get a great grasp upon the particulars of when it's doing it, except to say it doesn't appear to be at heavy throttle. Symptoms are, at idle and moderate cruise, it has a bit of a stumble. Temperature control hasn't been a problem, so doubt that is the issue. I more or less followed the JTR book in doing this. I am having a stumbling problem with my 1989 Chevy S10, which I have retrofitted a 350 smallblock into.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |