Honda - Accord :: 1999 V6 Intake Manifold Carbon Deposits
Jun 12, 2011
My 1999 Accord with V6 and 240,000 miles pings on all gas except premium.I removed the upper intake manifold and found a very small pool of oil in the mainifold floor next to the opening that the throttle body bolts to.Also there is a small port in the upper manifold next to the throttle body opening that is about 80% clogged with a hard black deposit. This deposit is also in the corresponding port on the lower intake manifold.I had a new EGR valve and decarbonization done at about 175,000 miles.
The car runs great on premium gas but it is supposed to run on regular which is a lot cheaper.
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I recently took my 2007 VW Passat 2.0T in b/c the check engine light was on. They initially replaced a leaking valve and a bad ignition coil, but the car was still misfiring on cylinder 3. They took off the intake manifold and found that there was significant carbon build up. The service writer said it was from "low-quality" gas. The car requires 91 octane. I've used 93 octane since 2007 but started using 89 octane around 6 months ago when the gas prices spiked again. Could 6 months of 89 octane cause significant carbon build up to the point it would trip the check engine light? Or could something else have caused it that I need to watch out for?
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I'd like to know the number of bolts and locations for removing intake manifold for 1999 Honda Passport.
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Been told my EGR valve is ok on my 96 accord . But I may have carbon build up in my suction side . I used deep creep for week to loosen up the build up. What else can I do?
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I'm replacing my knock sensors and intake gaskets on a 2001 silverado and there is a lot of carbon buildup in the intake, what can i use to safely clean it with....
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I have a 1999 Ford Expedition. A couple of days ago The engine started losing coolant as soon as the engine cooled. I replaced the coolant only to lose it again when the engine cooled. I was told that it is more likely the intake manifold gaskets leaking. It seems they are right. What is the cost to repair if I take it to a mechanic?
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1999 F-250 LD 5.4... There is a hole on the back of the upper intake manifold, just below the back of the throttle body, is a vacuum hose supposed to be attached here? Have a serious vacuum leak, no coolant loss, no overheating, just had cop's and spark plugs done, now she backfires, stalls and will not stay running, mech. says its an intake gasket but the gasket and lower intake manifold look new.
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I needed to replace the intake manifold gasket on my 2002 f250 v10. Tore everything apart put the new gasket in which was the same as the old one lyrics to notice something isn't right. I have been driving the truck for over 10 years like this. Is it OK to just continue bolting everything down and go on like this? I am guessing the prior owner 10 plus years ago put the wrong intake on. I keep looking up intakes but they all look just like the one I have. Also that port exposed is on the back passenger side.
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Wife took truck out and turned around after going less then a mile, saying it was running very bad. We got this truck about two months ago at a state vehicle auction. It was a state used truck, 145,000 miles, 05 Ford F350, ext cab and 8' bed. Anyway at first I thought it was valve tap until research said an exhaust manifold. With a fog machine in rear exhaust pipe we confirmed it was leaking and replaced the exhaust manifold. Figured it was probably a good time to replace spark plugs too. Took truck for a ride and she still buck and farted.
Got a code machine and got P0171 and P0174. Couldn't find a vacuum leak, but your could hear the air being sucked in. went to local parts store, guys couldn't find leak, but they said truck sounded like a steam machine. today I made a homemade smoke machine and smoke came from air intake, figured the gaskets were bad. The pictures show what I saw when I took the gaskets off. The port that has melted is the same port were the exhaust manifold was leaking from. Am in deep "doo-doo". What caused this?
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Today I was on my way back home from a weekend trip to see family when the CEL came on. The car was running fine no problems (we had driven 200 miles). Gas mileage was good, good power, no weird noises, engine temp was fine (it was 100 degrees outside). But being how the car has 39k on it and its the most expensive thing I own; I pulled over and had autozone scan it for me. It came up as Intake Manifold Sensor. I have never worked on this car but Im going to at some point, I'll replace it myself if it isn't to hard. I am wondering if it is as simple as replacing the sensor or could there be an underlying issue like a blown intake manifold gasket (like i said the car was running fine though)?
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Turned the key on my 2002 MC SS, V6, 3.8L, and the Intake Manifold exploded.
Intake Manifold Exploding on a GM V6, 3.8L? It sounded like a 12ga shotgun. Fortunately no one was looking into the engine compartment at the time as they likely would have been killed given the amount of shrapnel from this explosion. Note that the explosion was powerful enough to blow off the oil cap, which is screwed on with very thick threads.
The vehicle was at my mechanics at time and in his forty years he's not seen an intake manifold explode save for those residing on Top Fuel or Funny Cars.
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One of the nozzles on the back of my intake manifold broke off. I don't know how to better explain it. The ones the back of the manifold closest to the firewall there are several hoses that hook to the manifold. The second one from the left broke.
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I'm having a problem with the intake manifold shifter not working on my r32. I've tried all of the normal fixes, the shifter rod itself and the vacuum diaphragm that opens it are both functioning correctly, all of the vacuum lines are new and not leaking. Connecting vacuum directly to the diaphragm causes the shifter to immediately open. I've tried 3 different solenoids with the same result, all open when 12v is directly applied, but the manifold doesn't open at it's RPM point like it's supposed to. The solenoid sees a constant ~11v under all conditions, regardless of engine RPM. I've traced this wire back to the ECU and confirmed it's not damaged. No CEL other than for the SAI missing.
At this point, I'm assuming whatever circuit that controls this in the ECU is fried (cruise control doesn't work either.) I have an extra 24v vr6 (2.8) ECU sitting around which from what I've read uses the same hardware, just a different flash. This may be a stupid question, but if I were to take this to UM to get a performance flash, would I be able to basically overwrite the 2.8 ECU and make this work in the R? Would there be any issues with the immobilizer?
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My husband has a 2011 GTI, which has just hit the 40k mileage mark. His CEL started coming on in March, but we figured it was due to him not tightening the gas cap enough, as he'd open and relock the gas cap, and the CEL would go away within a few restarts of the car. Took it into the stealership last week, got the 40k service (which was a bit of a rip-off in itself), and then got told the manifold was bad.
This is the exact text for the invoice: "Checked the vehicle for codes and found code P2015. Traced the intermittent failure to the intake manifold valve flap sensor failing."
I've seen a lot of posts around this problem, for many models and years, but it seems like most people managed to get it repaired under warranty / TSB. So I have three questions:
1. In the OBD codes, does it store date as well as code? In other words, is there a way to prove that this failed under 36k miles?
2. What's the process for getting this escalated to VWOA customer care, since I feel this should be taken care of under warranty?
3. The dealership we took the car to (which is not where we purchased the car, but is just closer to home) was shady, and the guy we worked with was, to say it nicely, a jerk.
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Can oil leak out of Intake Manifold? i have Oil around lower intake manifold gasket. is this serious issue?
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I have a chamfering noise coming from my intake manifold on idle. sometimes its there and sometimes its not, it goes away with any application of throttle.
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I am just wondering at what revs the stock intake manifolds are meant to switch over as i think mine is stuck and not moving.
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2.4 Santa Fe ... I just took my Car to MOT inspection and found out there's a leak at my intake manifold and it's coming out of this place. it feels like brake fluid but my brake fluid is full?? I have seen many cars but never seen a part like this before. what is it doing there and why is it leaking ?
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My friend and I are working on her '03 1.8t and I noticed a huge oil leak under the intake manifold. It looks like there's a tube that has broken off and is now just spewing oil all over the place. I tried to get pics the best I could, so here they are....
I'd imagine its something that needs to be fixed asap.
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I noticed that my links for my intake manifold motors were broken i went to the dealer they didn't just sell the link they wanted 450.00 dollars for each one .
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I have a small clicking sound coming from my intake manifold. I recently installed a boost gauge and it did it once after that... I shut the car off and I didn't hear again until 1000 miles later and its back, why it would be clicking like this but its annoying
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