TeamCapri
Tech, Repairs, Upgrades => Capri XR-2 89-94 => Topic started by: kmblake on June 17, 2010, 06:49:00 PM
-
it sputters at like 2500rpm and up and goes a little slower on acceleration when it does it sound different when it happens like it doesn't want to rev any higher
sometimes it dosent do it but it does it most of the time i drive it know what could it be
someone help me
could it be the injectors?
-
have you tried a set of plugs??? mine is very tempermental with its plugs and about every 6 months it needs a set of plugs it does similar to what your describing...
i wouldnt think an injector would cuase a stumbleing issue...
is it a turbo car???
-
its a xr2 turbo
what plugs should i get
-
Do a compression test, I have the same issue, my compression is 150 140 90 and 120.
-
I've had same problem lately it just doesn't have the same get up and go. 2500-3k slight accel or holding steady it seems to fall on its face a bit. But once boost is built its fine. No oil burning. Nothing that sets it off but check engine light. Mostly thats tied into the o2 sensor from what I've read right? Since we don't have the system to get it read.
I figured it might be my plugs/wires. 2 months ago we tried to change my plugs out, I never worked on a 4cy. Never seen plugs that go the deep into the block.. Kinda pulled ot hard and ripped it apart. 20 mins later I had it rigged up and it ran fine no missing.
Anyways around then is when it started to do it. But the plug I pulled did look fine. I really hope rings arent going no way I can afford it right now.
Let me know if you find ne thing out on it.
-
I went with the Champion Copper plugs. I wanted to go with the Platinum plugs, because it sounds "Cooler" to say you have platinum plugs. However, my mechanic said that our cars were designed for the copper plugs and they will run better since the platinums are designed for a different ignition temperature. (Or something to that effect)
I do have to say, replacing my plugs, wires, cap & rotor made a HUGE, GIGANTIC difference in how my car runs. No more sputtering or slow pickup. The wires were the BIG difference. It looked like everything else had been recently changed but the wires were old. New wires gave me a new appreciation for the capri.
-
Copper plugs will work fine, they're OEM.
However Platinum and Iridium plugs will work fine as well, they make them in the OEM heat range so I kinda think your mechanic is blowing smoke. They work great, I've run both for many thousands of miles. Both are substantially more expensive but both have much greater life than a copper plug.
-
Ive always been told coppers are the best for turbo setups. I pretty much exclusively use NGK V-power nowadays. At $2 a pop how can you go wrong?
-
My car seems to miss and stutter under 2500 and when I let off while driving and get back on it at most any speed(like turbo lag but much worse). After a couple head jerks it's fine again. Idles right. Hot is worse. While waiting for other parts I checked the compression:100,98,100,101. Replaced spark plugs with Densos, not wires yet, checked ground wires to thermostat since recent replacement. Read somewhere about removing a solanoid on firewall-still don't understand those simple instructions(FPS?). I do most my own work but by no means am I a gearhead. Parts go on when funds are available, but I've got to get the tuning right. Timing is on(12•). no idea?
-
Colorado. Check to see if your plugs are white. My car did the same thing. Almost sure its a cracked manifold letting in air. Atleast thats what all my friends keep telling me. Thats the o2 is being fooled.
-
I checked the plugs and they look fine after 2 weeks. The wire I plugged in to the thermostat is right since the fan went on when unplugged with key on. Only ground unchecked is on the transmission that I can think of(raining now). Yesterday I sprayed brake cleaner around vaccuum fittings. Problem is it idles fine so can't tell any differences. On a pull it misses or hesitates a few then pulls through the higher ranges fine, unless I let off & back on it again. Bigger fuel pump? I don't red line it or anything, but if I want to chip down the road I want to know it runs right on beforehand. I appreciate all the input. Shouldn't the idle control screw be sealed completely? I can look in & see it-was heading in that direction next.
-
Checked out what Hollis said & found a crack. Going to keep up at Cracked Manifold thread and if it's not a real problem I'll be back here. Any more advise is always helpful though, since cracks I guess are common if they aren't bad(hairline).
-
I'm gonna continue here since I guess most manolds have a hairline & stay on subject. My vaccuum came up 13 1/2 @ idle & 14 1/2@ 2500 RPM's-it's got to be there but can't find anything. If $ I'd do a smoke test-has to be later. Compression seems low to me even though they're close as from above. Got a new fuel filter sitting here so might as well put it in. The bigger line running from below the PCV to the intake is cracky since it's ran across the top of valve covers-get that one done. If I can get ahold of a smoke machine where do I plug it in & what do I need to cover up? It's got too run right before I put any upgrades into this. There's a 94 with 40,000 less miles for $1800 sort of close-cheaper than dumping more in this one-but a solution would be nice so others can try to fix if they end up w/similar problems.
-
Your compression and manifold vacuum are both very low.
What mileage does your chassis/motor have?
Cracked line eh? That will wreak all sorts of havoc. Try patching it for now, see if it makes a difference, we can get a replacement for you.
-
A lot, 165,000-that's why all bushings etc. being replaced. I'll get on that line. Just replaced the fuel filter found little toys, 37 cents, and a braided ground strap(18") with a 3" bracket under the rear seat. I know where everything goes except the braided ground-factory speakers, doesn't look like anybody has been messing around back there. Waiting for axle still after alignment. Thanks for being around on this stuff Rocket.
-
O.K. My hose looks new now with a nice shiny well done job with electrical tape(rerouted). Vaccuum improved just slightly, but it ran better(that was one leak I think). Drove it kinda hard had a couple misses, once pretty bad kinda like a rev limiter cut out but @ 60 mph & 5000 rpm's on trying to climb & next shift would've been about 6000. Gonna look for a better timing light to make sure it's exact. Was looking for a temporary hose for that about 5:00 this morning. Ya know the boost looks fine(6), but I can't really hear blow-off. Is that normal on these 1.6's. Don't hear spool much either. I think that's just me from the WRX back then.
-
Timed it-no difference. When I can afford it new wires & cap. Did clean the cap & rotor a few ago. Doesn't burn oil, just cuts out & hesitates. Noticed a lot of threads that intermingle this same topic. With low compression and vaccuum wonder if it needs a rebuild. $$$ Need tires & top . + another car if this is going to be a project since it is my driver. If I replaced all vaccuum lines & a better fuel pump is that going to change compression @ all? & what's the best fuel pump for these?
-
Compression is determined by the rings & valves / valve seats. Other things like a blown HG can impact compression.
Did you perfom the comp test with-
-warm engine
-fuel injectors disconnected
-all spark plugs removed
-WOT
Squirting a bit of oil into the cylinders after & re-testing is a good check for ring condition. The compression #'s would bump a bit
-
Didn't diconnect fuel injectors, diconnected wires going to back of coil(taped close) w/Spark plug wires spaced far apart on board.did it outside. Will do again with injectors diconnected since I'll be using oil this time around today rain permitting.
-
Don't try to disconnect individual injectors, use the main harness plug further down the harness.
-
Glad I went back to bed & read that last one. OK- so #1 going straight across 105,105,100,114- with oil 140,140,135,140. Then I put cat litter in the spark plug holes to suck up any extra oil. Really though now the biggy, since they're running close 5% will this get me through until I can rebuild? I've got old man school starting in a week. I just looked up & noticed quite a bit of smoke coming through the exhaust manifold cover even after it stopped burning through the exhaust. You know it's got a crack but it's gotta be a little bigger than hairline. Let it cool down. Back to if it can survive a year w/o rebuild if I'm nice to it?
-
Also, is that enough to make it cut out. It's like Hollis said kinda feels like it's running outta gas, just not as bad since I have decent power. Just read that a stock 91 XR2 does 0-60 in 8.3 sec. Bet I could get close if I wanted to beat it up. Ref. 0-60 factory times.
-
So yeah, rings, but you should be okay running it for awhile. I've seen B6T's running as low as 80psi compression still running scary strong, even if you wanted to go ahead with upgrades you should be okay. Will need a re-ring at some point though
WHY OH GOD WHY WOULD YOU PUT KITTY LITTER IN THE ENGINE
kitty litter is made of bentonite clay and other silica based materials (sand!??!) which are abrasives... the little squirt of oil will burn off within a minute...
-
Then I put cat litter in the spark plug holes to suck up any extra oil
(http://graemlins/oops.gif) (http://graemlins/oops.gif) (http://graemlins/oops.gif) (http://graemlins/oops.gif) (http://graemlins/oops.gif) (http://graemlins/oops.gif) (http://graemlins/oops.gif)
You didn't really put Kitty Litter down your spark plug holes, did ya?
-
Thanks Rocketman, when fin. aid goes through I'll chip it1(mo. wait) These ECU's don't recognize the individual car I take it, so if I can find an extra @ a junkyard to run on while I send mine to you it should work right? I can solder wick the old out for swapping. I still need to find the miss now & NO ideas. I've looked everywhere for vaccuum, electrical. What about a fuel pump like a Walbro or something that fits. You know how we are it's gotta run A+. I can run smooth 92% of the time if babied, but when it's bad it's bad. Didn't like my kitty litter in the piston joke?
-
Stock fuel pump should be okay, not sure if we covered it before but how is your catalytic converter?
-
I'll need to put one in since I noticed how cheap they are(not $80 or 90- but 30ish on eBay). Still 'bout flat broke for awhile. Last thing coming is that axle for the popping sound-boots were worn so went with the easiest to fix first instead of control arm. When I got it aligned I made sure he checked 'em good with my explaination. The "recalls" section explains a lot of possibilities that others have posted as found reason. I'll post over there once this thing gets here & is in. Only one O2 sensor right?
-
I thought that said O2 sensor earlier, but in my county we don't need to worry about emissions so I was going to remove it & put a straight pipe in. Gotta save it since they'll for sure start emissions again someday. Colorado is messed up with the emissions stuff from county to county. I live in the 2nd biggest city- drive 15 mins. out & it's different.
-
Im not sure about you, where I live is emissions exempt, and they're trying to get it in... however it will only for cars less than 20 years old - so by next year my car will be exempt no matter what
Yes only one O2 sensor
-
I tell ya Rocketman my list of what must be done is getting longer & what I WANT to do is getting extended. If I'm thinking this way now this coming semester is gonna be wierd. Wonder how much snow a soft top can hold? As long as one doesn't sell nearby within 3 weeks I'll be in good shape. Green car, red top, may as well paint the bumpers white & put a golden eagle on the hood & I'll be driving a Mexican flag. The cat will be gone,tires,top,seafoam,O2. When that's done I'll see where it's @. Not much to post until I can get all this done. Get it chipped by ya next-may be awhile unfort. since I gotta go back & forth too sch. Gotta rescue this car like a dog in the pound-out.