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Car Forum / Driving, Maintenance, Tuning / Maintenance and Repair / April 2008Turn right, skips and jumps, turn left, back to normal, what the hell?
I've got a weird issue with an 87 Toyota Pickup 2WD 4 speed pickup, clutch has been replaced and transmission appears to be in half-decent condition, but whenever I get going up to a decent speed the truck will start to lose power, like skipping almost, if I floor it it'll get some power then the moment I let off and try to put it back down a bit theres no power whatsoever and usually I hear no change in the engine when I put it back down. I'm not sure if its the engine or the transmission or what, but I'm pretty sure its the engine. Also, if I turn to the right when it starts to do it, it skips more, but when I turn to the left, it seems to 'catch' and get power until I start to move right again. So weird. Any ideas? > I've got a weird issue with an 87 Toyota Pickup 2WD 4 speed pickup, > clutch has been replaced and transmission appears to be in half-decent [quoted text clipped - 7 lines] > turn to the left, it seems to 'catch' and get power until I start to > move right again. So weird. Any ideas? If turning left and right alters the power of the engine, I wonder if you've got a worn wheel bearing which is being made worse when you turn right and better when you turn left. Is there any grating noise when you turn? What is the fuel economy like - has it got worse, as would be the case if there were frictional losses in the bearing? > I've got a weird issue with an 87 Toyota Pickup 2WD 4 speed pickup, > clutch has been replaced and transmission appears to be in half-decent [quoted text clipped - 7 lines] > turn to the left, it seems to 'catch' and get power until I start to > move right again. So weird. Any ideas? 1987 Japanese truck.... that'll most likely be carbureted rather than fuel injected. And they tended to use Mikuni carbs, which are notoriously ill-tempered as they age. Power loss at speed coupled with getting worse when turning one direction and better in the other sounds like a fuel delivery problem- stuck float valve, plugged fuel filter, etc. Check the simple stuff first. "Steve" <no@spam.thanks> wrote in message > 1987 Japanese truck.... that'll most likely be carbureted rather than fuel > injected. And they tended to use Mikuni carbs, which are notoriously [quoted text clipped - 3 lines] > > Check the simple stuff first. Worn or broken motor mounts classically make problems like this even worse. > > I've got a weird issue with an 87 Toyota Pickup 2WD 4 speed pickup, > > clutch has been replaced and transmission appears to be in half-decent [quoted text clipped - 15 lines] > > Check the simple stuff first. Okay, got some carb cleaner, cleaned it out, replaced plugs, wires, distrib cap, and air filter. Oil/Oil Filter and clutch recently replaced. It seems to do it LESS, but it still does it. Might be carb, might be fuel filter, and I dunno where the float valve would be, how do I go about checking the carb further and the float valve, I'll get the fuel filter changed soon. >> Check the simple stuff first. > [quoted text clipped - 4 lines] > be, how do I go about checking the carb further and the float valve, > I'll get the fuel filter changed soon. The float valve is inside the carb and maintains a constant level of fuel in the small reservoir in the carb that the metering jets draw fuel from. If you buy a carburetor rebuild kit, it will be included (new needle/seat for the valve, and sometimes a new float also). But you should know what you're doing before you tear into a carburetor, particularly one as cantankerous as a last-year-before-fuel-injection Japanese carb. Do the fuel filter first... Check for cracks in the baseplate of the carb. I had a car do exactly this until I eventually got the sh.ts and replaced the carb. The crack would open up a touch around corners and lean the mix right off. Worth a look, anyway. | Cheers, | | Andy. | | Improve Usenet: Killfile Google Groups | | http://improve-usenet.org/ | > >> Check the simple stuff first. > [quoted text clipped - 12 lines] > particularly one as cantankerous as a last-year-before-fuel-injection > Japanese carb. Do the fuel filter first... F***ING THANK THE LORD. It was the fuel filter. I changed it, and god damn is there a difference. A-fscking-mazing what a $10 part can do to change how your vehicle runs. THANK YOU. > > >> Check the simple stuff first. > [quoted text clipped - 17 lines] > difference. A-fscking-mazing what a $10 part can do to change how > your vehicle runs. THANK YOU. SIDE NOTE: WOOHOO I CAN ACTUALLY PASS PEOPLE NOW. I went all the way to work 70mph without a damn skip pop or fizzle. > I've got a weird issue with an 87 Toyota Pickup 2WD 4 speed pickup, > clutch has been replaced and transmission appears to be in half-decent [quoted text clipped - 7 lines] > turn to the left, it seems to 'catch' and get power until I start to > move right again. So weird. Any ideas? Could have some water in the gas tank. My ranger acted quite weird after the top of the sender unit got some rust holes in it. For me it was moderate bumps. Acted just like the ignition was cutting off. It didn't have a strong gas smell, either, Dave > I've got a weird issue with an 87 Toyota Pickup 2WD 4 speed pickup, > clutch has been replaced and transmission appears to be in half-decent [quoted text clipped - 7 lines] > turn to the left, it seems to 'catch' and get power until I start to > move right again. So weird. Any ideas? Wayyyy back in high school my mechanics teacher told us that 90% of engine problems were electrical. I fussed with carburetors and other fuel stuff for years until I began to realize that he was right. Ignition has always been a weak point (that's why aircraft have two magnetos but only one carb) and I now, at age 55, go after the ignition first. You might have a bad connection somewhere, and I'd start at the distrubutor (or coils, if no distrubutor) and work back. The engine torquing in its mounts, or leaning a little in a turn, is possibly pulling on some corroded or loose connection, intermittently cutting off the spark. 90% likely, remember. Dan
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