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Engine, smooth with no load, lawn mower under load
Posted 15 March 2011 - 12:25 AM
Plug wires, plugs, air filter, oil filter, and oil are all new. Planning on doing the seafoam next week (want to figure out my new mpg first).
'87 GL coupe, 1.8L EA82 Carb. Originally an auto, now a 5-speed d/r. 118k miles.
Posted 15 March 2011 - 12:34 AM
Edited by Dj7291993, 15 March 2011 - 12:35 AM.
Posted 15 March 2011 - 12:36 AM
My EA82 would sound like a lawn mower most of the time with it's exhaust
leaks, but it was pretty quiet, just as you described, while idling.
EDIT: The choke not closing could be part of it, as it can often cause it to run
rich and allow for unburnt fuel to get to the exhaust leaks and self ignite.
But that would be backfiring as well, not just loud exhaust.
Edited by Twitch de la Brat, 15 March 2011 - 12:39 AM.
Poster added more details
Posted 15 March 2011 - 07:50 AM
If your timing is off it won't run right, I've been through that.
Posted 15 March 2011 - 08:12 AM
Lawnmower sound...check your exhaust gaskets/studs (right where they meet at the heads). If the gaskets are toast or you have a loose or missing bolt, the sound will be similar to a lawnmower. The nuts should be a 14mm deep socket if they are the originals. Holes...yes they will do that too but you might be able to quieten it down a bit by securing the studs/nuts to the heads. Proceed with caution though...you don't want to strip the studs or the nuts.
Posted 15 March 2011 - 03:25 PM
Posted 15 March 2011 - 05:38 PM
just checked the gaskets. It does back fire when the engine speed drops rapidly (like when shifting). And I've heard some that sound quieter in that regard, but they tend to tick (which, thank God, mine doesn't). If it's just the exhaust, then I'm gonna leave it alone. About $200 to fix that.
Actually, if you're willing to do the work, it's not that hard.
You just need to see which exhaust studs are loose and helicoil them, or tap them out to a larger size and make studs to fit.
Also, new gaskets are always a good idea if yours are old or burnt.
Posted 16 March 2011 - 12:33 AM
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