MTSuby Posted September 28, 2010 Share Posted September 28, 2010 I had the timing belts changed and I hoped that my timing was off and would be fixed after the job, but my exhaust is really rough, not smooth at all. Kind of poppy when it's idling. I changed my spark plugs/wires/cap/rotor, and like I said, the timing belts were just done. Where should I start looking? I'm guessing the exhaust shouldn't be so rough, and should more or less just sound somewhat smooth coming out the tailpiece. Quote Link to comment Share on other sites More sharing options...
GeneralDisorder Posted September 28, 2010 Share Posted September 28, 2010 Sounds like you have a rough idle with maybe some occasional missing going on? First we will need to know model, year, carbed/FI, etc. Otherwise the only thing I can think of that's common to all of them would be a vacuum leak. That will cause a rough idle and missing. GD Quote Link to comment Share on other sites More sharing options...
MTSuby Posted September 28, 2010 Author Share Posted September 28, 2010 Ah, rookie mistake, sorry. 93 Loyale, FI. That seems right (missing). My idle is rough, when it's warmed up, the car's got a nice shake to it when I'm stopped at a light. About a month ago, I had serious hesitation, rough idle, missing, jerking at acceleration etc. The tune up basically fixed that, but I guess not completely... So...is it time for the old "spray starting fluid around the intake to look for vacuum leaks"? Or what. Quote Link to comment Share on other sites More sharing options...
GeneralDisorder Posted September 28, 2010 Share Posted September 28, 2010 Yep - that's the first thing I would do. Check for vacuum leaks. GD Quote Link to comment Share on other sites More sharing options...
MTSuby Posted September 30, 2010 Author Share Posted September 30, 2010 Ok, thanks. Hopefully I'll get around to that soon...I go through phases where I don't feel like being a mechanic. I've been smelling gas a bit lately too like I'm running rich. I guess with a vacuum leak it could be throwing my emissions/fi stuff off? Anyways, I'll let you know what I find. Some day I'm going to get around to installing that nice shiny Nissan alternator, too.... Quote Link to comment Share on other sites More sharing options...
MTSuby Posted October 12, 2010 Author Share Posted October 12, 2010 Ok, I found some leaks, and I'll take photos later since my manual doesn't really tell me what the hoses are. But they're larger hoses, which have the old style clamps on them. Even after I got new hose clamps and really tightened them down, it's still sucking air...Do I need to replace the hoses? Or what? Like I said, I'll take photos of what I'm talking about, but I'm pretty sure I found my leaks, and they don't want to seal. Quote Link to comment Share on other sites More sharing options...
MTSuby Posted October 13, 2010 Author Share Posted October 13, 2010 So I used these hose clamps (that are kind of the right size..), and my idle still speeds up a bit when I spray starter fluid around here. Quote Link to comment Share on other sites More sharing options...
GeneralDisorder Posted October 13, 2010 Share Posted October 13, 2010 Are you *sure* the leak is around these hoses and not the throttle body boot, etc? I have not seen a problem with those before - but you should probably get the kit to prevent oil burning on long, sweeping right hand turns - it replaces most of those hoses and fittings in that area anyway.... GD Quote Link to comment Share on other sites More sharing options...
MTSuby Posted October 14, 2010 Author Share Posted October 14, 2010 No, not sure. I'll check closer. I'll also look into that kit...any links? Quote Link to comment Share on other sites More sharing options...
GeneralDisorder Posted October 14, 2010 Share Posted October 14, 2010 Not specifically - it was a recall(ish?) deal from the early 90's.... you could find all the same parts on a 93/94 Loyale I believe. The kits are pretty cheap from the dealer IIRC - just have them lookup the long, sweeping right hand turn recall kit.... people who complained got it installed for a minimal fee or free I'm sure so I think the cost of the kit from the dealer is negligable.... GD Quote Link to comment Share on other sites More sharing options...
Deener Posted October 14, 2010 Share Posted October 14, 2010 FYI another spot to check is the intake manifold...when I had a vaccum leak that I couldn't find by chasing the hoses, the breach was actually right where the intake manifold mates with the heads, but just on one side. My intake gaskets were trashed. The leak was so bad that when I was spraying carb cleaner on the top of my intake boot and hoses like that, I would get a change in rpm, so I thought it was coming from the hoses. It took me spraying directly (like an inch away) at the mating location of the head and the intake to discover the actual source. If you end up having to replace intake gaskets, the guys here will agree that the dealer gaskets are MUCH better than the aftermarket ones. Quote Link to comment Share on other sites More sharing options...
MTSuby Posted October 15, 2010 Author Share Posted October 15, 2010 Ok great, thanks guys. I'll look at things a little more closely and see what I've got going on. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.